{"cik":"0001641601","entityType":"operating","sic":"6022","sicDescription":"State Commercial Banks","ownerOrg":"02 Finance","insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"River Financial Corp","tickers":["RVRF"],"exchanges":["OTC"],"ein":"461422125","lei":null,"description":"","website":"","investorWebsite":"","category":"Accelerated filer<br>Smaller reporting company","fiscalYearEnd":"1231","stateOfIncorporation":"AL","stateOfIncorporationDescription":"AL","addresses":{"mailing":{"street1":"2611 LEGENDS DRIVE","street2":null,"city":"PRATTVILLE","stateOrCountry":"AL","zipCode":"36066","stateOrCountryDescription":"AL","isForeignLocation":0,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"2611 LEGENDS DRIVE","street2":null,"city":"PRATTVILLE","stateOrCountry":"AL","zipCode":"36066","stateOrCountryDescription":"AL","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"334-290-1012","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001193125-26-423045","0001193125-26-333009","0001193125-26-325324","0001193125-26-307288","0001193125-26-305817","0001193125-26-300763","0001193125-26-295704","0001193125-26-290594","0001193125-26-282946","0001193125-26-233602","0001193125-26-205930","0001193125-26-154701","0001193125-26-143184","0001193125-26-099933","0001193125-26-022299","0001193125-26-017699","0001193125-26-016353","0001193125-25-319144","0001193125-25-318886","0001193125-25-264259","0001193125-25-243279","0000950170-25-103100","0000950170-25-071610","0000950170-25-064155","0000950170-25-052329","0000950170-25-051637","0000950170-25-040968","0000950170-25-036910","0000950170-25-024323","0000950170-25-024153","0000950170-25-023868","0000950170-24-125161","0000950170-24-091569","0000950170-24-060820","0000950170-24-054392","0000950170-24-039940","0000950170-24-030321","0000950170-24-029883","0000950170-24-019270","0000950170-23-060194","0001986587-23-000002","0000950170-23-039563","0000950170-23-022951","0000950170-23-021700","0000950170-23-011858","0000950170-23-007840","0000950170-23-003159","0000950170-22-023090","0000950170-22-013819","0001564590-22-020699","0001564590-22-019188","0001564590-22-014182","0001564590-22-010446","0001564590-22-005610","0001564590-21-057706","0001564590-21-055651","0001564590-21-039999","0001564590-21-031956","0001564590-21-028983","0001564590-21-026338","0001564590-21-018121","0001564590-21-013564","0001209191-21-020071","0001564590-21-011986","0001564590-21-003554","0001564590-20-052837","0001564590-20-036096","0001564590-20-026268","0001564590-20-024550","0001564590-20-016983","0001564590-20-012011","0001564590-20-006013","0001564590-19-046384","0001564590-19-040291","0001564590-19-039607","0001193125-19-269838","9999999995-19-002077","0001193125-19-241876","0001193125-19-241868","0001193125-19-241858","0001193125-19-225966","0001564590-19-029392","0001564590-19-022549","0001564590-19-021722","0001564590-19-021723","0001564590-19-016596","0001564590-19-012977","0001564590-19-010337","0001564590-19-009559","0001564590-19-008662","0001564590-19-000571","0001209191-18-057833","0001209191-18-057829","0001564590-18-027285","0001564590-18-026462","0001564590-18-019985","0001564590-18-016871","0001564590-18-012349","0001564590-18-009542","0001564590-18-006290","0001564590-17-023175","0001564590-17-016795","0001564590-17-010830","0001564590-17-007707","0001564590-17-005325","0001564590-16-029299","0001564590-16-024328","0001564590-16-019518","0001564590-16-016571","0001564590-16-015617","0001564590-16-015388","0001193125-16-476780","0001193125-16-448538","0001564590-16-011711","0001564590-15-011492","0001564590-15-011305","9999999995-15-002895","0001193125-15-353087","0001193125-15-353076","0001193125-15-344548","0001193125-15-344530","0000000000-15-049010","0001193125-15-332467","0001193125-15-332450","0000000000-15-043347","0001193125-15-272902","0001193125-15-272891","0001193125-15-185403"],"filingDate":["2026-10-15","2026-08-04","2026-07-30","2026-07-17","2026-07-16","2026-07-10","2026-07-06","2026-06-30","2026-06-25","2026-05-21","2026-05-05","2026-04-14","2026-04-06","2026-03-10","2026-01-26","2026-01-21","2026-01-20","2025-12-15","2025-12-15","2025-11-04","2025-10-20","2025-08-05","2025-05-14","2025-05-06","2025-04-09","2025-04-07","2025-03-18","2025-03-11","2025-02-20","2025-02-20","2025-02-20","2024-11-12","2024-08-06","2024-05-16","2024-05-07","2024-04-02","2024-03-13","2024-03-12","2024-02-23","2023-11-07","2023-09-12","2023-08-08","2023-05-18","2023-05-12","2023-04-05","2023-03-14","2023-02-17","2022-11-08","2022-08-02","2022-05-19","2022-05-10","2022-04-12","2022-03-15","2022-02-18","2021-11-19","2021-11-09","2021-08-03","2021-06-07","2021-05-20","2021-05-11","2021-04-08","2021-03-16","2021-03-12","2021-03-10","2021-02-01","2020-11-10","2020-08-04","2020-05-20","2020-05-12","2020-04-16","2020-03-20","2020-02-24","2019-12-19","2019-11-05","2019-11-04","2019-10-18","2019-09-12","2019-09-10","2019-09-10","2019-09-10","2019-08-21","2019-08-06","2019-06-14","2019-06-05","2019-06-05","2019-05-07","2019-04-25","2019-04-01","2019-03-27","2019-03-20","2019-01-11","2018-11-09","2018-11-09","2018-11-06","2018-11-02","2018-08-07","2018-07-16","2018-05-09","2018-04-27","2018-03-20","2017-11-09","2017-08-09","2017-05-15","2017-04-28","2017-03-27","2016-11-15","2016-08-15","2016-05-16","2016-04-25","2016-03-30","2016-03-28","2016-02-25","2016-02-03","2016-01-05","2015-12-14","2015-12-07","2015-10-28","2015-10-26","2015-10-26","2015-10-15","2015-10-15","2015-10-08","2015-09-29","2015-09-29","2015-08-27","2015-07-31","2015-07-31","2015-05-13"],"reportDate":["2026-04-14","2026-06-30","2026-06-19","2026-06-19","2026-04-14","2026-06-19","2026-06-19","2025-12-31","2026-06-19","2026-05-19","2026-03-31","2026-04-14","2026-04-06","2025-12-31","2026-01-26","2026-01-20","2026-01-20","","2024-12-31","2025-09-30","2025-10-20","2025-06-30","2025-05-13","2025-03-31","","2025-03-31","2025-03-17","2024-12-31","2025-02-20","2025-02-20","2025-02-20","2024-09-30","2024-06-30","2024-05-14","2024-03-31","2024-04-01","2023-12-31","2023-12-31","2024-02-23","2023-09-30","","2023-06-30","2023-05-16","2023-03-31","2023-04-03","2022-12-31","2023-02-17","2022-09-30","2022-06-30","2022-05-17","2022-03-31","2022-05-17","2021-12-31","2022-02-17","2021-11-15","2021-09-30","2021-06-30","2021-06-04","2021-05-17","2021-03-31","2021-05-17","2020-12-31","","2021-03-09","2021-02-01","2020-09-30","2020-06-30","2020-05-18","2020-03-31","2020-05-18","2019-12-31","2020-02-20","2019-10-31","2019-09-30","2019-10-31","","","","","","","2019-06-30","","2019-06-04","","2019-03-31","2019-04-23","","2019-04-23","2018-12-31","2018-10-31","","","2018-09-30","2018-10-31","2018-06-30","2018-07-10","2018-03-31","2018-04-24","2017-12-31","2017-09-30","2017-06-30","2017-03-31","2017-04-25","2016-12-31","2016-09-30","2016-06-30","2016-03-31","2016-04-19","2016-03-28","2015-12-31","2015-12-31","","2015-12-31","2015-09-30","2015-12-01","","","","","","","","","","","",""],"acceptanceDateTime":["2026-10-16T01:27:51.000Z","2026-08-05T00:44:41.000Z","2026-07-30T19:40:01.000Z","2026-07-17T20:20:02.000Z","2026-07-16T21:20:52.000Z","2026-07-10T22:30:26.000Z","2026-07-06T17:54:44.000Z","2026-07-01T00:23:23.000Z","2026-06-26T00:52:09.000Z","2026-05-21T16:48:16.000Z","2026-05-05T21:57:27.000Z","2026-04-14T22:55:48.000Z","2026-04-06T19:28:19.000Z","2026-03-10T22:50:32.000Z","2026-01-26T23:53:59.000Z","2026-01-21T23:59:46.000Z","2026-01-20T23:36:28.000Z","2025-12-16T01:57:00.000Z","2025-12-15T23:54:13.000Z","2025-11-05T00:09:30.000Z","2025-10-20T19:47:35.000Z","2025-08-06T00:31:09.000Z","2025-05-15T01:15:47.000Z","2025-05-06T20:33:56.000Z","2025-04-09T20:31:11.000Z","2025-04-08T00:36:20.000Z","2025-03-18T21:29:20.000Z","2025-03-11T19:10:05.000Z","2025-02-21T03:25:41.000Z","2025-02-21T02:11:04.000Z","2025-02-20T21:53:41.000Z","2024-11-13T00:41:06.000Z","2024-08-06T22:13:24.000Z","2024-05-16T17:49:52.000Z","2024-05-07T23:30:27.000Z","2024-04-02T21:55:01.000Z","2024-03-13T04:14:22.000Z","2024-03-12T23:54:54.000Z","2024-02-24T00:24:38.000Z","2023-11-08T01:57:17.000Z","2023-09-12T23:28:29.000Z","2023-08-08T20:38:26.000Z","2023-05-18T21:12:04.000Z","2023-05-12T23:13:30.000Z","2023-04-05T18:01:09.000Z","2023-03-14T23:37:44.000Z","2023-02-17T23:10:03.000Z","2022-11-08T23:44:05.000Z","2022-08-02T21:08:41.000Z","2022-05-19T17:18:57.000Z","2022-05-10T22:00:04.000Z","2022-04-12T20:20:02.000Z","2022-03-16T01:00:36.000Z","2022-02-18T04:13:17.000Z","2021-11-19T20:07:27.000Z","2021-11-10T01:08:41.000Z","2021-08-03T19:12:13.000Z","2021-06-08T00:17:04.000Z","2021-05-20T19:04:31.000Z","2021-05-11T17:59:04.000Z","2021-04-08T20:41:54.000Z","2021-03-17T00:06:56.000Z","2021-03-12T23:31:52.000Z","2021-03-10T23:39:22.000Z","2021-02-01T22:24:38.000Z","2020-11-10T22:49:47.000Z","2020-08-04T23:49:01.000Z","2020-05-20T18:07:21.000Z","2020-05-12T20:21:25.000Z","2020-04-16T18:22:50.000Z","2020-03-20T23:38:15.000Z","2020-02-25T01:43:12.000Z","2019-12-20T01:08:05.000Z","2019-11-06T00:57:50.000Z","2019-11-04T21:56:30.000Z","2019-10-18T19:40:52.000Z","2019-09-13T08:15:21.000Z","2019-09-10T22:59:32.000Z","2019-09-10T22:54:55.000Z","2019-09-10T22:48:40.000Z","2019-08-21T23:08:23.000Z","2019-08-07T00:27:47.000Z","2019-06-14T21:53:37.000Z","2019-06-05T18:17:07.000Z","2019-06-05T18:15:10.000Z","2019-05-08T00:54:17.000Z","2019-04-25T21:43:09.000Z","2019-04-01T18:19:53.000Z","2019-03-27T23:27:49.000Z","2019-03-21T01:00:14.000Z","2019-01-11T23:38:33.000Z","2018-11-09T05:19:55.000Z","2018-11-09T04:59:40.000Z","2018-11-07T00:11:50.000Z","2018-11-02T23:14:00.000Z","2018-08-08T00:33:41.000Z","2018-07-16T20:27:03.000Z","2018-05-09T23:39:11.000Z","2018-04-27T23:02:18.000Z","2018-03-20T21:39:58.000Z","2017-11-10T01:19:35.000Z","2017-08-09T19:03:51.000Z","2017-05-13T02:49:22.000Z","2017-04-28T20:51:07.000Z","2017-03-28T00:00:02.000Z","2016-11-15T03:49:46.000Z","2016-08-15T23:53:07.000Z","2016-05-16T23:53:22.000Z","2016-04-25T23:52:09.000Z","2016-03-30T22:23:13.000Z","2016-03-28T23:58:06.000Z","2016-02-25T16:07:35.000Z","2016-02-03T19:07:27.000Z","2016-01-05T20:59:16.000Z","2015-12-15T01:55:09.000Z","2015-12-07T21:44:09.000Z","2015-10-29T08:15:13.000Z","2015-10-26T22:16:36.000Z","2015-10-26T22:09:20.000Z","2015-10-15T21:46:34.000Z","2015-10-15T21:23:15.000Z","2015-10-08T19:59:23.000Z","2015-09-29T23:25:34.000Z","2015-09-29T23:20:20.000Z","2015-08-28T00:47:27.000Z","2015-07-31T23:53:35.000Z","2015-07-31T23:48:03.000Z","2015-05-13T22:58:48.000Z"],"act":["34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","33","34","34","34","34","34","34","33","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","33","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","33","34","34","34","34","34","34","34","34","34","34","34","34","33","33","","","33","33","34","34","34","34","34","34","34","34","34","34","33","33","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","33","34","34","34","33","","33","","33","","","33","","","33",""],"form":["8-K","10-Q","8-K/A","8-K/A","8-K","8-K/A","8-K/A","11-K","8-K","8-K","10-Q","8-K","DEF 14A","10-K","8-K","8-K/A","8-K","S-8","11-K","10-Q","8-K","10-Q","8-K","10-Q","S-8","DEF 14A","8-K","10-K","8-K/A","8-K","8-K","10-Q","10-Q","8-K","10-Q","DEF 14A","10-K/A","10-K","8-K","10-Q","D","10-Q","8-K","10-Q","DEF 14A","10-K","8-K","10-Q","10-Q","8-K","10-Q","DEF 14A","10-K","8-K","8-K","10-Q","10-Q","8-K","8-K","10-Q","DEF 14A","10-K","D","8-K","8-K","10-Q","10-Q","8-K","10-Q","DEF 14A","10-K","8-K","8-K/A","10-Q","8-K","S-8","EFFECT","CORRESP","CORRESP","S-4/A","S-4","10-Q","425","8-K","425","10-Q","8-K","DEFR14A","DEF 14A","10-K","8-K/A","D","D","10-Q","8-K","10-Q","8-K","10-Q","8-K","10-K","10-Q","10-Q","10-Q","8-K","10-K","10-Q","10-Q","10-Q","8-K","8-K","10-K","8-K/A","S-8","8-K","10-Q","8-K","EFFECT","CORRESP","S-4/A","CORRESP","S-4/A","UPLOAD","CORRESP","S-4/A","UPLOAD","CORRESP","S-4","425"],"fileNumber":["333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-292139","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-286449","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","021-491915","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","021-392095","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-234247","333-233387","","","333-233387","333-233387","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","021-325438","021-325434","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-205986","333-209352","333-205986","333-205986","333-205986","333-205986","","333-205986","","333-205986","","","333-205986","","","333-205986",""],"filmNumber":["261463792","261239624","261221344","261182682","261179563","261168223","261154542","261140793","261122691","261006059","26942120","26860515","26839999","26738612","26559985","26546808","26542214","251571459","251570952","251447979","251402893","251185473","25947092","25916298","25824478","25818651","25747336","25726379","25647429","25645460","25643999","241447107","241178473","24953841","24921438","24813273","24744195","24741928","24670145","231383505","231249942","231150206","23935097","23915150","23801409","23730549","23641512","221368118","221127869","22941275","22908811","22821588","22742013","22649917","211426831","211391671","211138495","21999726","21943211","21909987","21814402","21745720","21736542","21729088","21575656","201300380","201073176","20895935","20868188","20795424","20731854","20644077","191295388","191192932","191188797","191157149","191091484","","","191085022","191042944","191002454","19898346","19878935","19878933","19803910","19766766","19719151","19708230","19695151","19522028","181171082","181171054","181162497","181156748","18998584","18954039","18818054","18783204","18701415","171190451","171016834","17840515","17793438","17715355","161996722","161832375","161653427","161589006","161538721","161532244","161453743","161383334","161320559","151285962","151271855","151181638","","151174776","","151159820","","","151130684","","","151019274",""],"items":["2.02,9.01","","1.05,9.01","1.05,9.01","2.02,9.01","1.05,9.01","1.05,9.01","","1.05,9.01","5.07,9.01","","2.02,9.01","","","8.01,9.01","2.02,9.01","2.02,9.01","","","","2.02,8.01,9.01","","5.07,9.01","","","","1.02","","8.01","8.01","5.07,9.01","","","5.07,9.01","","","","","8.01","","06b","","5.07,9.01","","","","8.01","","","5.07,9.01","","","","8.01,9.01","5.02,9.01","","","5.02","5.07,9.01","","","","06b","1.01,2.03,9.01","8.01,9.01","","","5.07","","","","8.01,9.01","5.02,9.01","","2.01,8.01,9.01","","S-4,,2019-09-12 15:00:00","","","","","","","1.01,8.01,9.01","","","5.03,5.07,9.01","","","","9.01","06b","06b","","1.01,1.02,2.01,3.02,8.01,9.01","","1.01,8.01,9.01","","5.07","","","","","5.07","","","","","5.07","4.01,9.01","","9.01","","1.01,2.01,8.01,9.01","","5.07,9.01","S-4,,2015-10-28 15:00:00","","","","","","","","","","",""],"core_type":["XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","DEF 14A","XBRL","XBRL","XBRL","XBRL","S-8","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","S-8","DEF 14A","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","DEF 14A","XBRL","XBRL","XBRL","XBRL","D","XBRL","XBRL","XBRL","DEF 14A","XBRL","XBRL","XBRL","XBRL","XBRL","XBRL","DEF 14A","XBRL","XBRL","XBRL","XBRL","XBRL","8-K","8-K","10-Q","DEF 14A","10-K","D","8-K","8-K","10-Q","10-Q","8-K","10-Q","DEF 14A","10-K","8-K","8-K/A","10-Q","8-K","S-8","EFFECT","CORRESP","CORRESP","S-4/A","S-4","10-Q","425","8-K","425","10-Q","8-K","DEFR14A","DEF 14A","10-K","8-K/A","D","D","10-Q","8-K","10-Q","8-K","10-Q","8-K","10-K","10-Q","10-Q","10-Q","8-K","10-K","10-Q","10-Q","10-Q","8-K","8-K","10-K","8-K/A","S-8","8-K","10-Q","8-K","EFFECT","CORRESP","S-4/A","CORRESP","S-4/A","LETTER","CORRESP","S-4/A","LETTER","CORRESP","S-4","425"],"size":[181374,25771067,180175,180255,177387,180742,179648,4354666,203431,196187,23821623,176459,867801,35746605,237728,176398,179376,311615,4445330,25198484,290160,24842400,217065,23150704,200863,2993167,165609,36217901,240479,240454,336647,22214326,21139680,188636,20928969,9674906,29990544,29912652,227941,26520125,14714,30398504,685872,28459361,468958,36157224,251656,25453938,24194720,212065,21691457,1892081,31931229,390622,495020,22366261,20974762,30528,92776,18386392,271335,29419237,17877,435123,99821,19378092,19314174,72064,18729359,226596,30831201,51709,1638438,19459851,47703,50402,1657,9832,10339,6919642,19200617,19150372,25482,771061,771422,18408630,87308,140436,295622,28972829,3513117,11630,11418,18406938,338124,18374307,748372,17321213,37432,25703238,18053443,18008464,17162012,37451,26464395,17629951,17553715,16986076,40016,59442,25876920,12934,237972,366951,16640332,164976,1657,26622,5911238,30776,5901288,38924,59570,5919206,188039,3643,6185702,14971],"isXBRL":[1,1,1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,1,1,1,1,1,1,1,0,0,1,1,1,1,1,1,1,1,1,0,1,1,1,1,0,1,1,1,0,1,1,1,1,1,1,0,1,1,1,1,1,0,0,1,0,1,0,0,0,1,1,0,1,0,1,0,0,1,0,0,0,0,0,0,1,1,0,0,0,1,0,0,0,1,0,0,0,1,0,1,0,1,0,1,1,1,1,0,1,1,1,1,0,0,1,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[1,1,1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,1,1,1,1,1,1,1,0,0,1,1,1,1,1,1,1,1,1,0,1,1,1,1,0,1,1,1,0,1,1,1,1,1,1,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[0,1,0,0,0,0,0,1,0,0,1,0,0,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["ck0001641601-20260414.htm","ck0001641601-20260630.htm","ck0001641601-20260619.htm","ck0001641601-20260619.htm","ck0001641601-20260414.htm","ck0001641601-20260619.htm","ck0001641601-20260619.htm","ck0001641601-20251231.htm","ck0001641601-20260619.htm","ck0001641601-20260519.htm","ck0001641601-20260331.htm","ck0001641601-20260414.htm","2026_proxy_-_8k.htm","ck0001641601-20251231.htm","ck0001641601-20260126.htm","ck0001641601-20260120.htm","ck0001641601-20260120.htm","ck0001641601-20251215.htm","ck0001641601-20241231.htm","ck0001641601-20250930.htm","ck0001641601-20251015.htm","ck0001641601-20250630.htm","ck0001641601-20250513.htm","ck0001641601-20250331.htm","s-8_2025_incentive_stock.htm","2025_proxy_-_8k.htm","ck0001641601-20250317.htm","ck0001641601-20241231.htm","ck0001641601-20250220.htm","ck0001641601-20250220.htm","ck0001641601-20250220.htm","ck0001641601-20240930.htm","ck0001641601-20240630.htm","ck0001641601-20230516.htm","ck0001641601-20240331.htm","2024_proxy_-_8k.htm","ck0001641601-20231231.htm","ck0001641601-20231231.htm","ck0001641601-20230216.htm","ck0001641601-20230930.htm","xslFormDX01/primary_doc.xml","ck0001641601-20230630.htm","ck0001641601-20230516.htm","ck0001641601-20230331.htm","2023_proxy_-_8k.htm","ck0001641601-20221231.htm","ck0001641601-20230216.htm","ck0001641601-20220930.htm","ck0001641601-20220630.htm","ck001641601-8k_20220517.htm","ck001641601-10q_20220331.htm","ck001641601-def14a_20220517.htm","ck001641601-10k_20211231.htm","ck001641601-8k_20220217.htm","ck001641601-8k_20211115.htm","ck001641601-10q_20210930.htm","ck001641601-10q_20210630.htm","ck0001641601-8k_20210604.htm","ck0001641601-8k_20210517.htm","ck0001641601-10q_20210331.htm","ck0001641601-def14a_20210408.htm","ck0001641601-10k_20201231.htm","xslFormDX01/primary_doc.xml","ck0001641601-8k_20210309.htm","ck0001641601-8k_20210201.htm","ck0001641601-10q_20200930.htm","ck0001641601-10q_20200630.htm","ck0001641601-8k_20200518.htm","ck0001641601-10q_20200331.htm","ck0001641601-def14a_20200414.htm","ck0001641601-10k_20191231.htm","ck0001641601-8k_20200220.htm","ck0001641601-8ka_20191218.htm","ck0001641601-10q_20190930.htm","ck0001641601-8k_20191031.htm","d746926ds8.htm","xslEFFECTX01/primary_doc.xml","filename1.htm","filename1.htm","d775751ds4a.htm","d775751ds4.htm","ck0001641601-10q_20190630.htm","ck0001641601-425.htm","ck0001641601-8k_20190604.htm","ck0001641601-8k_20190604.htm","ck0001641601-10q_20190331.htm","ck0001641601-8k_20190423.htm","ck0001641601-defr14_20190325.htm","ck0001641601-def14a_20190423.htm","ck0001641601-10k_20181231.htm","ck0001641601-8ka_20181031.htm","xslFormDX01/primary_doc.xml","xslFormDX01/primary_doc.xml","ck0001641601-10q_20180930.htm","ck0001641601-8k_20181031.htm","ck0001641601-10q_20180630.htm","ck0001641601-8k_20180710.htm","ck0001641601-10q_20180331.htm","ck0001641601-8k_20180424.htm","ck0001641601-10k_20171231.htm","ck0001641601-10q_20170930.htm","ck0001641601-10q_20170630.htm","ck0001641601-10q_20170331.htm","ck0001641601-8k_20170425.htm","ck0001641601-10k_20161231.htm","ck0001641601-10q_20160930.htm","ck0001641601-10q_20160630.htm","ck0001641601-10q_20160331.htm","ck0001641601-8k_20160419.htm","ck0001641601-8k_20160328.htm","ck0001641601-10k_20151231.htm","d149814d8ka.htm","d113905ds8.htm","ck0001641601-8k_20151231.htm","ck0001641601-10q_20150930.htm","ck0001641601-8k_20151201.htm","xslEFFECTX01/primary_doc.xml","filename1.htm","d41281ds4a.htm","filename1.htm","d41281ds4a.htm","filename1.pdf","filename1.htm","d41281ds4a.htm","filename1.pdf","filename1.htm","d41281ds4.htm","d924180d425.htm"],"primaryDocDescription":["8-K","10-Q","8-K/A","8-K/A","8-K","8-K/A","8-K/A","11-K","8-K","8-K","10-Q","8-K","DEF 14A","10-K","8-K","8-K/A","8-K","S-8","11-K","10-Q","8-K","10-Q","8-K","10-Q","S-8","DEF 14A","8-K","10-K","8-K/A","8-K","8-K","10-Q","10-Q","8-K","10-Q","DEF 14A","10-K/A","10-K","8-K","10-Q","","10-Q","8-K","10-Q","DEF 14A","10-K","8-K","10-Q","10-Q","8-K","10-Q","DEF 14A PROXY STATEMENT","10-K","8-K","8-K","10-Q","10-Q","8-K KEN'S RETIREMENT","8-K ELECTION OF OFFICERS","10-Q","DEF 14A PROXY STATEMENT","10-K","","8-K SUB DEBT ISSUANCE","8-K DIVIDEND DECLARED","10-Q","06.30.2020 10-Q","8-K ELECTION OF OFFICERS","03.31.20 10-Q","DEF 14A 2020 PROXY MATERIALS","12.31.19 10-K","8-K DIVIDEND DECLARED","8-K/A COMPLETION OF TRINITY MERGER UPDATE","9/30/19 10-Q","8-K COMPLETION OF ACQUISITION","S-8","","","","S-4/A","S-4","2ND QUARTER 2019 10-Q","425 TRINITY SHAREHOLDER LETTER","8-K - ENTRY INTO MATERIAL DEFINITIVE AGREEMENT (TRINITY)","8-K - ENTRY INTO MATERIAL DEFINITIVE AGREEMENT (TRINITY)","10-Q","8-K ELECTION OF DIRECTORS","DEFR14A","DEF 14A PROXY STATEMENT","10-K","8-K/A","","","10-Q","8-K","10-Q","8-K","10-Q","8-K","10-K","10-Q","10-Q","RIVERFINANCIAL-Q1-20170331","8-K","10-K","RIVERFINANCIAL-Q3-20160930","RIVERFINANCIAL-Q2-2016063","10-Q","8-K","8-K","10-K","8-K/A","S-8","8-K","10-Q","8-K","","","FORM S-4 AMENDMENT NO.3","","FORM S-4, AMENDMENT NO. 2","","","S-4/A","","","FORM S-4","425"]},"files":[]}}