{"cik":1371489,"taxonomy":"us-gaap","tag":"LongTermDebtNoncurrent","label":"Long-term Debt, Excluding Current Maturities","description":"Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.","entityName":"Information Services Group Inc.","units":{"USD":[{"end":"2010-12-31","val":69813000,"accn":"0001104659-11-045403","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09"},{"end":"2010-12-31","val":69813000,"accn":"0001104659-11-061602","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-07"},{"end":"2010-12-31","val":69813000,"accn":"0001047469-12-002765","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15","frame":"CY2010Q4I"},{"end":"2011-06-30","val":66563000,"accn":"0001104659-11-045403","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09","frame":"CY2011Q2I"},{"end":"2011-09-30","val":64813000,"accn":"0001104659-11-061602","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-07","frame":"CY2011Q3I"},{"end":"2011-12-31","val":63063000,"accn":"0001047469-12-002765","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15"},{"end":"2011-12-31","val":63063000,"accn":"0001104659-12-035908","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10"},{"end":"2011-12-31","val":63063000,"accn":"0001104659-12-056568","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"end":"2011-12-31","val":63063000,"accn":"0001104659-12-076669","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":63063000,"accn":"0001047469-13-002665","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13","frame":"CY2011Q4I"},{"end":"2012-03-31","val":60563000,"accn":"0001104659-12-035908","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2012Q1I"},{"end":"2012-06-30","val":58063000,"accn":"0001104659-12-056568","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09","frame":"CY2012Q2I"},{"end":"2012-09-30","val":55563000,"accn":"0001104659-12-076669","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":53063000,"accn":"0001047469-13-002665","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":53063000,"accn":"0001104659-13-041383","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-14"},{"end":"2012-12-31","val":53063000,"accn":"0001104659-13-061048","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":53063000,"accn":"0001104659-13-082815","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-08"},{"end":"2012-12-31","val":53063000,"accn":"0001047469-14-001991","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-07","frame":"CY2012Q4I"},{"end":"2013-03-31","val":50563000,"accn":"0001104659-13-041383","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-14","frame":"CY2013Q1I"},{"end":"2013-06-30","val":56731000,"accn":"0001104659-13-061048","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":55887000,"accn":"0001104659-13-082815","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-08","frame":"CY2013Q3I"},{"end":"2013-12-31","val":53371000,"accn":"0001047469-14-001991","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-07"},{"end":"2013-12-31","val":53371000,"accn":"0001104659-14-037008","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09"},{"end":"2013-12-31","val":53371000,"accn":"0001104659-14-058990","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-11"},{"end":"2013-12-31","val":53371000,"accn":"0001104659-14-077139","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":53371000,"accn":"0001047469-15-002152","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13","frame":"CY2013Q4I"},{"end":"2014-03-31","val":52528000,"accn":"0001104659-14-037008","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09","frame":"CY2014Q1I"},{"end":"2014-06-30","val":51684000,"accn":"0001104659-14-058990","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-11","frame":"CY2014Q2I"},{"end":"2014-09-30","val":50559000,"accn":"0001104659-14-077139","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":49434000,"accn":"0001047469-15-002152","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-13"},{"end":"2014-12-31","val":49434000,"accn":"0001104659-15-036887","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-11"},{"end":"2014-12-31","val":49434000,"accn":"0001104659-15-058256","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-10"},{"end":"2014-12-31","val":49434000,"accn":"0001104659-15-077288","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09"},{"end":"2014-12-31","val":49434000,"accn":"0001558370-16-003969","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-10","frame":"CY2014Q4I"},{"end":"2015-03-31","val":48309000,"accn":"0001104659-15-036887","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-11","frame":"CY2015Q1I"},{"end":"2015-06-30","val":49704000,"accn":"0001104659-15-058256","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-10","frame":"CY2015Q2I"},{"end":"2015-09-30","val":49093000,"accn":"0001104659-15-077288","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09","frame":"CY2015Q3I"},{"end":"2015-12-31","val":48531000,"accn":"0001558370-16-003969","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-10"},{"end":"2015-12-31","val":47947000,"accn":"0001558370-16-005686","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-09"},{"end":"2015-12-31","val":47947000,"accn":"0001558370-16-007668","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-08"},{"end":"2015-12-31","val":47947000,"accn":"0001558370-16-009691","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-08"},{"end":"2015-12-31","val":47947000,"accn":"0001558370-17-001838","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2015Q4I"},{"end":"2016-03-31","val":47215000,"accn":"0001558370-16-005686","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-09","frame":"CY2016Q1I"},{"end":"2016-06-30","val":57036000,"accn":"0001558370-16-007668","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-08","frame":"CY2016Q2I"},{"end":"2016-09-30","val":56519000,"accn":"0001558370-16-009691","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-08","frame":"CY2016Q3I"},{"end":"2016-12-31","val":116485000,"accn":"0001558370-17-001838","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"end":"2016-12-31","val":116485000,"accn":"0001558370-17-003993","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-09"},{"end":"2016-12-31","val":116485000,"accn":"0001558370-17-006133","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-07"},{"end":"2016-12-31","val":116485000,"accn":"0001558370-17-008718","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09"},{"end":"2016-12-31","val":116485000,"accn":"0001558370-18-002157","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2016Q4I"},{"end":"2017-03-31","val":114444000,"accn":"0001558370-17-003993","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-09","frame":"CY2017Q1I"},{"end":"2017-06-30","val":112577000,"accn":"0001558370-17-006133","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-07","frame":"CY2017Q2I"},{"end":"2017-09-30","val":100707000,"accn":"0001558370-17-008718","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09","frame":"CY2017Q3I"},{"end":"2017-12-31","val":98838000,"accn":"0001558370-18-002157","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16"},{"end":"2017-12-31","val":98838000,"accn":"0001558370-18-004667","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-10"},{"end":"2017-12-31","val":98838000,"accn":"0001558370-18-006449","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-06"},{"end":"2017-12-31","val":98838000,"accn":"0001558370-18-009170","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-09"},{"end":"2017-12-31","val":98838000,"accn":"0001558370-19-002121","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-15","frame":"CY2017Q4I"},{"end":"2018-03-31","val":96974000,"accn":"0001558370-18-004667","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-10","frame":"CY2018Q1I"},{"end":"2018-06-30","val":92970000,"accn":"0001558370-18-006449","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-08-06","frame":"CY2018Q2I"},{"end":"2018-09-30","val":91113000,"accn":"0001558370-18-009170","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-09","frame":"CY2018Q3I"},{"end":"2018-12-31","val":89212000,"accn":"0001558370-19-002121","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-15"},{"end":"2018-12-31","val":89212000,"accn":"0001558370-19-004855","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-10"},{"end":"2018-12-31","val":89212000,"accn":"0001558370-19-007097","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-05"},{"end":"2018-12-31","val":89212000,"accn":"0001558370-19-010221","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-07"},{"end":"2018-12-31","val":89212000,"accn":"0001558370-20-002405","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-11","frame":"CY2018Q4I"},{"end":"2019-03-31","val":85136000,"accn":"0001558370-19-004855","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-10","frame":"CY2019Q1I"},{"end":"2019-06-30","val":86024000,"accn":"0001558370-19-007097","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-05","frame":"CY2019Q2I"},{"end":"2019-09-30","val":84922000,"accn":"0001558370-19-010221","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-07","frame":"CY2019Q3I"},{"end":"2019-12-31","val":74823000,"accn":"0001558370-20-002405","fy":2019,"fp":"FY","form":"10-K","filed":"2020-03-11"},{"end":"2019-12-31","val":74823000,"accn":"0001558370-20-006318","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-11"},{"end":"2019-12-31","val":74823000,"accn":"0001558370-20-010190","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-10"},{"end":"2019-12-31","val":74823000,"accn":"0001558370-20-013324","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09"},{"end":"2019-12-31","val":74823000,"accn":"0001558370-21-002901","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-12","frame":"CY2019Q4I"},{"end":"2020-03-31","val":81447000,"accn":"0001558370-20-006318","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-11","frame":"CY2020Q1I"},{"end":"2020-06-30","val":75573000,"accn":"0001558370-20-010190","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-08-10","frame":"CY2020Q2I"},{"end":"2020-09-30","val":74564000,"accn":"0001558370-20-013324","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-11-09","frame":"CY2020Q3I"},{"end":"2020-12-31","val":73551000,"accn":"0001558370-21-002901","fy":2020,"fp":"FY","form":"10-K","filed":"2021-03-12"},{"end":"2020-12-31","val":73551000,"accn":"0001558370-21-006688","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-10"},{"end":"2020-12-31","val":73551000,"accn":"0001558370-21-010927","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-09"},{"end":"2020-12-31","val":73551000,"accn":"0001558370-21-014771","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-05"},{"end":"2020-12-31","val":73551000,"accn":"0001558370-22-003397","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-11","frame":"CY2020Q4I"},{"end":"2021-03-31","val":72537000,"accn":"0001558370-21-006688","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-05-10","frame":"CY2021Q1I"},{"end":"2021-06-30","val":71522000,"accn":"0001558370-21-010927","fy":2021,"fp":"Q2","form":"10-Q","filed":"2021-08-09","frame":"CY2021Q2I"},{"end":"2021-09-30","val":70506000,"accn":"0001558370-21-014771","fy":2021,"fp":"Q3","form":"10-Q","filed":"2021-11-05","frame":"CY2021Q3I"},{"end":"2021-12-31","val":69490000,"accn":"0001558370-22-003397","fy":2021,"fp":"FY","form":"10-K","filed":"2022-03-11"},{"end":"2021-12-31","val":69490000,"accn":"0001558370-22-008072","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-10"},{"end":"2021-12-31","val":69490000,"accn":"0001558370-22-012589","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-08"},{"end":"2021-12-31","val":69490000,"accn":"0001558370-22-016392","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-04"},{"end":"2021-12-31","val":69490000,"accn":"0001558370-23-003447","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-10","frame":"CY2021Q4I"},{"end":"2022-03-31","val":68472000,"accn":"0001558370-22-008072","fy":2022,"fp":"Q1","form":"10-Q","filed":"2022-05-10","frame":"CY2022Q1I"},{"end":"2022-06-30","val":67454000,"accn":"0001558370-22-012589","fy":2022,"fp":"Q2","form":"10-Q","filed":"2022-08-08","frame":"CY2022Q2I"},{"end":"2022-09-30","val":66435000,"accn":"0001558370-22-016392","fy":2022,"fp":"Q3","form":"10-Q","filed":"2022-11-04","frame":"CY2022Q3I"},{"end":"2022-12-31","val":74416000,"accn":"0001558370-23-003447","fy":2022,"fp":"FY","form":"10-K","filed":"2023-03-10"},{"end":"2022-12-31","val":74416000,"accn":"0001558370-23-008767","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-09"},{"end":"2022-12-31","val":74416000,"accn":"0001558370-23-013864","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-08"},{"end":"2022-12-31","val":74416000,"accn":"0001558370-23-017572","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-03"},{"end":"2022-12-31","val":74416000,"accn":"0001558370-24-002831","fy":2023,"fp":"FY","form":"10-K","filed":"2024-03-08","frame":"CY2022Q4I"},{"end":"2023-03-31","val":79175000,"accn":"0001558370-23-008767","fy":2023,"fp":"Q1","form":"10-Q","filed":"2023-05-09","frame":"CY2023Q1I"},{"end":"2023-06-30","val":79175000,"accn":"0001558370-23-013864","fy":2023,"fp":"Q2","form":"10-Q","filed":"2023-08-08","frame":"CY2023Q2I"},{"end":"2023-09-30","val":79175000,"accn":"0001558370-23-017572","fy":2023,"fp":"Q3","form":"10-Q","filed":"2023-11-03","frame":"CY2023Q3I"},{"end":"2023-12-31","val":79175000,"accn":"0001558370-24-002831","fy":2023,"fp":"FY","form":"10-K","filed":"2024-03-08"},{"end":"2023-12-31","val":79175000,"accn":"0001558370-24-007744","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-05-10"},{"end":"2023-12-31","val":79175000,"accn":"0001558370-24-011129","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-08-06"},{"end":"2023-12-31","val":79175000,"accn":"0001558370-24-015035","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-08"},{"end":"2023-12-31","val":79175000,"accn":"0001558370-25-002897","fy":2024,"fp":"FY","form":"10-K","filed":"2025-03-13","frame":"CY2023Q4I"},{"end":"2024-03-31","val":74175000,"accn":"0001558370-24-007744","fy":2024,"fp":"Q1","form":"10-Q","filed":"2024-05-10","frame":"CY2024Q1I"},{"end":"2024-06-30","val":74175000,"accn":"0001558370-24-011129","fy":2024,"fp":"Q2","form":"10-Q","filed":"2024-08-06","frame":"CY2024Q2I"},{"end":"2024-09-30","val":66175000,"accn":"0001558370-24-015035","fy":2024,"fp":"Q3","form":"10-Q","filed":"2024-11-08","frame":"CY2024Q3I"},{"end":"2024-12-31","val":59175000,"accn":"0001558370-25-002897","fy":2024,"fp":"FY","form":"10-K","filed":"2025-03-13"},{"end":"2024-12-31","val":59175000,"accn":"0001558370-25-007132","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-05-09"},{"end":"2024-12-31","val":59175000,"accn":"0001558370-25-010750","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-08-07"},{"end":"2024-12-31","val":59175000,"accn":"0001104659-25-105474","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-03"},{"end":"2024-12-31","val":59175000,"accn":"0001104659-26-024573","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-06","frame":"CY2024Q4I"},{"end":"2025-03-31","val":59175000,"accn":"0001558370-25-007132","fy":2025,"fp":"Q1","form":"10-Q","filed":"2025-05-09","frame":"CY2025Q1I"},{"end":"2025-06-30","val":59175000,"accn":"0001558370-25-010750","fy":2025,"fp":"Q2","form":"10-Q","filed":"2025-08-07","frame":"CY2025Q2I"},{"end":"2025-09-30","val":59202000,"accn":"0001104659-25-105474","fy":2025,"fp":"Q3","form":"10-Q","filed":"2025-11-03","frame":"CY2025Q3I"},{"end":"2025-12-31","val":59175000,"accn":"0001104659-26-024573","fy":2025,"fp":"FY","form":"10-K","filed":"2026-03-06"},{"end":"2025-12-31","val":59175000,"accn":"0001104659-26-057713","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-08"},{"end":"2025-12-31","val":59175000,"accn":"0001104659-26-091859","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-06","frame":"CY2025Q4I"},{"end":"2026-03-31","val":59175000,"accn":"0001104659-26-057713","fy":2026,"fp":"Q1","form":"10-Q","filed":"2026-05-08","frame":"CY2026Q1I"},{"end":"2026-06-30","val":59175000,"accn":"0001104659-26-091859","fy":2026,"fp":"Q2","form":"10-Q","filed":"2026-08-06","frame":"CY2026Q2I"}]}}