{"cik":"0001315968","entityType":"operating","sic":"6189","sicDescription":"Asset-Backed Securities","ownerOrg":null,"insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"MASTR ALTERNATIVE LOAN TRUST 2005-1","tickers":[],"exchanges":[],"ein":null,"lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":"1285 AVENUE OF THE AMERICAS","street2":null,"city":"NEW YORK","stateOrCountry":"NY","zipCode":"10019","stateOrCountryDescription":"NY","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":"2127132000","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001056404-06-001658","0001056404-06-000912","0001056404-06-000373","0001056404-06-000372","0001056404-06-000121","0001056404-05-004298","0001056404-05-003617","0001056404-05-003244","0001056404-05-003072","0001056404-05-002766","0001056404-05-002349","0001056404-05-002282","0001056404-05-002054","0001056404-05-001940","0001056404-05-001858","0001056404-05-001162","0001162318-05-000122","0001125282-05-000308"],"filingDate":["2006-03-31","2006-01-27","2006-01-10","2006-01-10","2006-01-04","2005-12-06","2005-10-31","2005-09-28","2005-09-01","2005-08-02","2005-06-29","2005-06-03","2005-05-04","2005-04-20","2005-04-05","2005-03-07","2005-02-17","2005-01-28"],"reportDate":["2005-12-31","","2005-12-27","2005-11-25","2005-12-27","2005-11-25","2005-10-25","2005-09-26","2005-08-25","2005-07-25","2005-06-27","2005-05-25","2005-04-25","2005-02-25","2005-03-25","2005-02-25","2005-02-17",""],"acceptanceDateTime":["2006-03-31T17:41:53.000Z","2006-01-27T20:36:32.000Z","2006-01-10T12:54:43.000Z","2006-01-10T12:53:57.000Z","2006-01-04T20:35:34.000Z","2005-12-05T23:14:25.000Z","2005-10-31T16:12:04.000Z","2005-09-28T20:53:18.000Z","2005-09-01T21:02:42.000Z","2005-08-02T16:11:07.000Z","2005-06-29T18:53:40.000Z","2005-06-03T19:35:14.000Z","2005-05-04T20:51:25.000Z","2005-04-20T18:34:02.000Z","2005-04-05T15:08:50.000Z","2005-03-07T15:19:02.000Z","2005-02-17T19:42:39.000Z","2005-01-28T23:04:45.000Z"],"act":["34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","34","33"],"form":["10-K","15-15D","8-K/A","8-K/A","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K/A","8-K","8-K","8-K","424B5"],"fileNumber":["333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60","333-106982-60"],"filmNumber":["06726852","06557613","06520814","06520813","06507266","051245349","051165266","051108714","051065288","05990799","05924182","05877559","05799870","05761683","05732544","05662916","05623744","05559491"],"items":["","","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01","8.01,9.01",""],"core_type":["10-K","15-15D","8-K/A","8-K/A","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K","8-K/A","8-K","8-K","8-K","424B5"],"size":[343063,4286,213121,214871,212838,191430,189848,189282,189279,187890,107997,108559,107788,108227,107333,107614,1363203,1377035],"isXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["mal05001_10k-2005.txt","mal05001_15-2005.txt","mal05001_8ka-200512.txt","mal05001_8ka-200511.txt","mal05001_8k-200512.txt","mal05001_8k-200511.txt","mal05001_10510.txt","mal05001_10509.txt","mal05001_10508.txt","mal05001_10507.txt","mal05001_10506.txt","mal05001_10505.txt","mal05001_10504.txt","mal05001_10502.txt","mal05001_10503.txt","mal05001_10502.txt","m51492form8k.htm","b404216_424b.txt"],"primaryDocDescription":["","","","","","","","","","","","","","FEBRUARY 8K/A","","","FORM 8-K","424B5"]},"files":[]}}