{"cik":"0001217064","entityType":"operating","sic":"6189","sicDescription":"Asset-Backed Securities","ownerOrg":null,"insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"MORTGAGE ASSET SECURIT TRANS INC MORT PS THR CERT SER 2003-1","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":"1285 AVE OF THE AMERICAS","street2":null,"city":"NEW YORK","stateOrCountry":"NY","zipCode":"10019","stateOrCountryDescription":"NY","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":null,"flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001056404-04-001103","0001056404-04-000332","0001056404-04-000012","0001056404-03-002246","0001056404-03-001968","0001056404-03-001731","0001056404-03-001576","0001056404-03-001318","0001056404-03-001080","0001056404-03-000968","0001056404-03-000853","0001056404-03-000657","0001056404-03-000396","0000914121-03-000203","0000950136-03-000186"],"filingDate":["2004-03-30","2004-01-23","2004-01-06","2003-12-01","2003-11-04","2003-10-02","2003-09-08","2003-08-08","2003-07-03","2003-06-04","2003-05-09","2003-04-09","2003-03-07","2003-02-19","2003-01-31"],"reportDate":["2004-03-30","","2003-12-26","2003-11-25","2003-10-25","2003-09-25","2003-08-25","2003-07-25","2003-06-25","2003-05-25","2003-04-25","2003-03-25","2003-02-25","2003-01-29",""],"acceptanceDateTime":["2004-03-30T21:59:34.000Z","2004-01-23T18:03:44.000Z","2004-01-06T16:37:09.000Z","2003-12-01T20:39:42.000Z","2003-11-04T19:45:58.000Z","2003-10-02T18:50:47.000Z","2003-09-08T14:42:17.000Z","2003-08-08T14:18:31.000Z","2003-07-03T13:04:04.000Z","2003-06-04T19:50:20.000Z","2003-05-09T14:11:52.000Z","2003-04-09T13:30:06.000Z","2003-03-07T22:17:19.000Z","2003-02-19T20:04:44.000Z","2003-01-31T21:49:01.000Z"],"act":["","","","","","","","","","","","","","",""],"form":["10-K","15-15D","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","424B5"],"fileNumber":["333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01","333-101254-01"],"filmNumber":["04702125","04539896","04508362","031030039","03975849","03923809","03885262","03830326","03773743","03732626","03689209","03643358","03596872","03572569","03535016"],"items":["","","5,7","5,7","5,7","5,7","5,7","5,7","5,7","5,7","5,7","5,7","5,7","5,7",""],"core_type":["10-K","15-15D","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","424B5"],"size":[46924,4084,73722,73716,73698,73698,73570,73923,72563,72609,72590,72829,72504,540992,1160800],"isXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["mal03001_form10k.txt","mal03001_form15.txt","mal03001.txt","mal03001.txt","mal03001.txt","mal03001.txt","mal03001.txt","mal03001.txt","mal03001.txt","mal03001.txt","mal03001.txt","mal03001.txt","mal03001.txt","malt699376-8k.txt","file001.txt"],"primaryDocDescription":["","","DECEMBER 8-K","NOVEMBER 8-K","OCTOBER 8-K","SEPTEMBER 8K","AUGUST 8-K","JULY 8K","JUNE 8-K","MAY 8-K","APRIL 8K","MARCH 8-K","FEBRUARY 8K","CURRENT REPORT","DEFINITIVE MATERIALS"]},"files":[]}}