{"cik":"0001302186","entityType":"operating","sic":"6189","sicDescription":"Asset-Backed Securities","ownerOrg":null,"insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"MASTR Alternative Loan Trust 2004-8","tickers":[],"exchanges":[],"ein":"000000000","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":["0001056404-05-001681","0001056404-05-000862","0001056404-05-000161","0001056404-04-004214","0001056404-04-003848","0001056404-04-003272","0000914121-04-001905","0000950136-04-002877"],"filingDate":["2005-03-31","2005-01-28","2005-01-04","2004-12-03","2004-11-04","2004-10-04","2004-09-14","2004-09-01"],"reportDate":["2004-12-31","","2004-12-27","2004-11-26","2004-10-25","2004-09-25","2004-08-30",""],"acceptanceDateTime":["2005-03-31T18:32:43.000Z","2005-01-28T15:11:38.000Z","2005-01-04T18:19:14.000Z","2004-12-03T17:54:44.000Z","2004-11-04T17:19:44.000Z","2004-10-04T14:57:31.000Z","2004-09-14T21:21:03.000Z","2004-09-01T20:59:01.000Z"],"act":["34","34","34","34","34","","",""],"form":["10-K","15-15D","8-K","8-K","8-K","8-K","8-K","424B5"],"fileNumber":["333-106982-40","333-106982-40","333-106982-40","333-106982-40","333-106982-40","333-106982-40","333-106982-40","333-106982-40"],"filmNumber":["05718485","05556046","05505483","041182812","041118675","041060615","041030285","041011616"],"items":["","","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","8-K","8-K","8-K","8-K","424B5"],"size":[306351,4300,109889,110315,110269,109935,801167,1404308],"isXBRL":[0,0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0,0],"isXBRLNumeric":[null,null,null,null,null,null,null,null],"primaryDocument":["mal04008_2004.txt","mal04008_2004.txt","mal04008_dec.txt","mal04008_nov.txt","mal04008_oct.txt","mal04008_sep.txt","mo792225-8k.txt","file001.htm"],"primaryDocDescription":["","","DECEMBER 8-K","NOVEMBER 8K","OCTOBER 8-K","SEPTEMBER 8-K","CURRENT REPORT","DEFINITIVE MATERIALS"]},"files":[]}}