{"cik":"0001268610","entityType":"operating","sic":"6189","sicDescription":"Asset-Backed Securities","ownerOrg":null,"insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"CWMBS INC CHL MORTGAGE PASS THROUGH TRUST 2003 53","tickers":[],"exchanges":[],"ein":null,"lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":null,"street2":null,"city":null,"stateOrCountry":null,"zipCode":null,"stateOrCountryDescription":null,"isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"4500 PARK GRANADA","street2":null,"city":"CALABASAS","stateOrCountry":"CA","zipCode":"91302","stateOrCountryDescription":"CA","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":null,"flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0000905148-04-001921","0000905148-04-000347","0001071787-04-000087","0001071787-03-001515","0000950148-03-002562"],"filingDate":["2004-03-30","2004-01-27","2004-01-06","2003-12-03","2003-10-30"],"reportDate":["2003-12-31","","2003-12-25","2003-11-25",""],"acceptanceDateTime":["2004-03-29T22:49:50.000Z","2004-01-27T19:29:05.000Z","2004-01-06T16:49:01.000Z","2003-12-03T15:24:35.000Z","2003-10-30T00:26:11.000Z"],"act":["","","","",""],"form":["10-K","15-15D","8-K","8-K","424B5"],"fileNumber":["333-103821-44","333-103821-44","333-103821-44","333-103821-44","333-103821-44"],"filmNumber":["04697464","04545918","04508502","031034114","03964810"],"items":["","","7","7",""],"core_type":["10-K","15-15D","8-K","8-K","424B5"],"size":[26183,4111,16684,16688,692814],"isXBRL":[0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0],"isXBRLNumeric":[null,null,null,null,null],"primaryDocument":["efc4-0684_5523404form10k.txt","efc4-0131_5498135fm1515d.txt","cw0353_8k0312.txt","cw0353_8k0311.txt","v93792e424b5.txt"],"primaryDocDescription":["","","","","424(B)(5)"]},"files":[]}}