{"cik":"0000857696","entityType":"other","sic":"","sicDescription":"","ownerOrg":null,"insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":0,"name":"WESTFIELD CAPITAL MANAGEMENT CO INC","tickers":[],"exchanges":[],"ein":"043042550","lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":null,"stateOfIncorporation":"","stateOfIncorporationDescription":"","addresses":{"mailing":{"street1":"ONE FINANCIAL CENTER","street2":null,"city":"BOSTON","stateOrCountry":"MA","zipCode":"02111","stateOrCountryDescription":"MA","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"ONE FINANCIAL CENTER","street2":null,"city":"BOSTON","stateOrCountry":"MA","zipCode":"02111","stateOrCountryDescription":"MA","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":null,"flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0000927016-02-002247","0000927016-02-000245","0000927016-02-000244","0000927016-02-000243","0000927016-02-000242","0000927016-02-000241","0000927016-02-000240","0000927016-02-000239","0000927016-02-000238","0000927016-02-000237","0000927016-02-000236","0000927016-02-000235","0000927016-02-000234","0000927016-02-000233","0000927016-01-503160","0000927016-01-501825","0000927016-01-001776","0000927016-01-000350","0000927016-01-000349","0000927016-01-000348","0000927016-01-000347","0000927016-01-000346","0000927016-01-000345","0000927016-01-000344","0000927016-01-000131","0000927016-00-003544","0000927016-00-002698","0000927016-00-001450","0000927016-00-000421","0000927016-00-000420","0000927016-00-000419","0000927016-00-000116","0000927016-99-003485","0000927016-99-002634","0000927016-99-001570","0000950109-96-000123"],"filingDate":["2002-04-24","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2002-01-16","2001-10-15","2001-07-10","2001-04-10","2001-01-31","2001-01-31","2001-01-31","2001-01-31","2001-01-31","2001-01-31","2001-01-31","2001-01-12","2000-10-11","2000-08-03","2000-04-25","2000-02-10","2000-02-10","2000-02-10","2000-01-18","1999-10-21","1999-07-19","1999-04-21","1996-01-09"],"reportDate":["2002-03-31","2001-12-31","","","","","","","","","","","","","2001-09-30","2001-06-30","2001-03-31","","","","","","","","2000-12-31","2000-09-30","2000-06-30","2000-03-31","","","","1999-12-31","1999-09-30","1999-06-30","1999-03-31",""],"acceptanceDateTime":["2002-04-24T17:58:51.000Z","2002-01-16T18:43:22.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2002-01-16T05:00:00.000Z","2001-10-15T16:39:57.000Z","2001-07-10T19:25:00.000Z","2001-04-10T20:24:00.000Z","2001-01-31T05:00:00.000Z","2001-01-31T05:00:00.000Z","2001-01-31T05:00:00.000Z","2001-01-31T05:00:00.000Z","2001-01-31T05:00:00.000Z","2001-01-31T05:00:00.000Z","2001-01-31T05:00:00.000Z","2001-01-12T22:07:00.000Z","2000-10-11T18:14:00.000Z","2000-08-03T13:24:00.000Z","2000-04-25T20:27:00.000Z","2000-02-10T05:00:00.000Z","2000-02-10T05:00:00.000Z","2000-02-10T05:00:00.000Z","2000-01-18T20:06:00.000Z","1999-10-21T14:01:00.000Z","1999-07-19T19:44:00.000Z","1999-04-21T04:00:00.000Z","1996-01-09T05:00:00.000Z"],"act":["","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","",""],"form":["13F-HR","13F-HR","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","13F-HR","13F-HR","13F-HR","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G","SC 13G","SC 13G","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G"],"fileNumber":["028-03633","028-03633","","","","","","","","","","","","","028-03633","028-03633","028-03633","","","","","","","","028-03633","028-03633","028-03633","028-03633","","","","028-03633","028-03633","028-03633","028-03633",""],"filmNumber":["02619483","02510404","","","","","","","","","","","","","01758907","01677988","01599510","","","","","","","","01508218","00738256","00684936","00608288","","","","00508803","99731498","99666500","99597931",""],"items":["","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","",""],"core_type":["13F-HR","13F-HR","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","13F-HR","13F-HR","13F-HR","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","SC 13G","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G","SC 13G","SC 13G","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G"],"size":[65602,66190,15625,15766,15683,15550,15727,15828,15628,15715,15633,15662,15758,15669,75721,77634,52254,15737,15588,15645,15745,15592,15594,15614,68006,57263,63456,86523,15566,17404,17467,58259,52713,67213,69441,9659],"isXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["d13fhr.txt","d13fhr.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","dsc13g.txt","d13fhr.txt","d13fhr.txt","0001.txt","0001.txt","0001.txt","0001.txt","0001.txt","0001.txt","0001.txt","0001.txt","0001.txt","0001.txt","0001.txt","","","","","","","","",""],"primaryDocDescription":["FORM 13F","FORM 13F-HR","SCHEUDLE 13G","W H ENERGY SERVICES","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","FORM 13F-HR","FORM 13F","SCHEDULE 13F","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","FORM 13F-HR","FORM 13F-HR","FORM 13F-HR DATED 6/30/2000","FORM 13F","SCHEDULE 13G","SCHEDULE 13G","SCHEDULE 13G","FORM 13F","FORM 13-F","FORM 13-F","FORM 13-F","SCHEDULE 13G"]},"files":[]}}