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Supplemental Guarantor Information - Unaudited Consolidating Statement of Income (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Condensed Financial Statements, Captions [Line Items]        
Total revenue $ 299,359us-gaap_RealEstateRevenueNet $ 270,021us-gaap_RealEstateRevenueNet $ 565,123us-gaap_RealEstateRevenueNet $ 563,191us-gaap_RealEstateRevenueNet
Home construction and land sales expenses 245,446us-gaap_HomeBuildingCosts 216,969us-gaap_HomeBuildingCosts 475,992us-gaap_HomeBuildingCosts 455,438us-gaap_HomeBuildingCosts
Inventory impairments and option contract abandonments 0us-gaap_InventoryWriteDown 880us-gaap_InventoryWriteDown 0us-gaap_InventoryWriteDown 911us-gaap_InventoryWriteDown
Gross profit 53,913us-gaap_GrossProfit 52,172us-gaap_GrossProfit 89,131us-gaap_GrossProfit 106,842us-gaap_GrossProfit
Commissions 11,969us-gaap_SalesCommissionsAndFees 11,096us-gaap_SalesCommissionsAndFees 22,895us-gaap_SalesCommissionsAndFees 22,917us-gaap_SalesCommissionsAndFees
General and administrative expenses 32,727us-gaap_GeneralAndAdministrativeExpense 32,628us-gaap_GeneralAndAdministrativeExpense 64,168us-gaap_GeneralAndAdministrativeExpense 61,038us-gaap_GeneralAndAdministrativeExpense
Depreciation and amortization 2,781us-gaap_Depreciation 2,831us-gaap_Depreciation 5,122us-gaap_Depreciation 5,738us-gaap_Depreciation
Operating income (loss) 6,436us-gaap_OperatingIncomeLoss 5,617us-gaap_OperatingIncomeLoss (3,054)us-gaap_OperatingIncomeLoss 17,149us-gaap_OperatingIncomeLoss
Equity in income (loss) of unconsolidated entities 82us-gaap_IncomeLossFromEquityMethodInvestments (17)us-gaap_IncomeLossFromEquityMethodInvestments 224us-gaap_IncomeLossFromEquityMethodInvestments 302us-gaap_IncomeLossFromEquityMethodInvestments
Loss on extinguishment of debt 0us-gaap_GainsLossesOnExtinguishmentOfDebt (153)us-gaap_GainsLossesOnExtinguishmentOfDebt 0us-gaap_GainsLossesOnExtinguishmentOfDebt (153)us-gaap_GainsLossesOnExtinguishmentOfDebt
Other (expense) income, net (8,473)us-gaap_OtherNonoperatingIncomeExpense (13,727)us-gaap_OtherNonoperatingIncomeExpense (17,907)us-gaap_OtherNonoperatingIncomeExpense (29,484)us-gaap_OtherNonoperatingIncomeExpense
(Loss) income before income taxes (1,955)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (8,280)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (20,737)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (12,186)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
(Benefit from) provision for income taxes 105us-gaap_IncomeTaxExpenseBenefit (56)us-gaap_IncomeTaxExpenseBenefit (591)us-gaap_IncomeTaxExpenseBenefit (14)us-gaap_IncomeTaxExpenseBenefit
Equity in income of subsidiaries 0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations 0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations 0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations 0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
Loss from continuing operations (2,060)us-gaap_IncomeLossFromContinuingOperations (8,224)us-gaap_IncomeLossFromContinuingOperations (20,146)us-gaap_IncomeLossFromContinuingOperations (12,172)us-gaap_IncomeLossFromContinuingOperations
Income (loss) from discontinued operations, net of tax 64us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 253us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity (4,190)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity (937)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Equity in income of subsidiaries from discontinued operations 0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations 0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations 0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations 0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
Net loss (1,996)us-gaap_NetIncomeLoss (7,971)us-gaap_NetIncomeLoss (24,336)us-gaap_NetIncomeLoss (13,109)us-gaap_NetIncomeLoss
Change in unrealized loss related to available-for-sale securities 1,070us-gaap_MarketableSecuritiesUnrealizedGainLoss 0us-gaap_MarketableSecuritiesUnrealizedGainLoss 1,276us-gaap_MarketableSecuritiesUnrealizedGainLoss 0us-gaap_MarketableSecuritiesUnrealizedGainLoss
Comprehensive loss (926)us-gaap_OtherComprehensiveIncomeLossNetOfTax (7,971)us-gaap_OtherComprehensiveIncomeLossNetOfTax (23,060)us-gaap_OtherComprehensiveIncomeLossNetOfTax (13,109)us-gaap_OtherComprehensiveIncomeLossNetOfTax
Beazer Homes USA, Inc.        
Condensed Financial Statements, Captions [Line Items]        
Total revenue 0us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Home construction and land sales expenses 9,782us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
7,379us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
17,976us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
14,514us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Inventory impairments and option contract abandonments   0us-gaap_InventoryWriteDown
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
  0us-gaap_InventoryWriteDown
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Gross profit (9,782)us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(7,379)us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(17,976)us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(14,514)us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Commissions 0us-gaap_SalesCommissionsAndFees
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_SalesCommissionsAndFees
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_SalesCommissionsAndFees
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_SalesCommissionsAndFees
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
General and administrative expenses 0us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Depreciation and amortization 0us-gaap_Depreciation
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_Depreciation
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_Depreciation
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_Depreciation
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Operating income (loss) (9,782)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(7,379)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(17,976)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(14,514)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Equity in income (loss) of unconsolidated entities 0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Loss on extinguishment of debt   (153)us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
  (153)us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Other (expense) income, net (7,695)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(14,659)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(17,442)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(30,692)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(Loss) income before income taxes (17,477)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(22,191)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(35,418)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(45,359)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(Benefit from) provision for income taxes (6,456)us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(210)us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(13,083)us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(199)us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Equity in income of subsidiaries 8,961bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
13,757bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
2,189bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
32,988bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Loss from continuing operations (2,060)us-gaap_IncomeLossFromContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(8,224)us-gaap_IncomeLossFromContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(20,146)us-gaap_IncomeLossFromContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(12,172)us-gaap_IncomeLossFromContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Income (loss) from discontinued operations, net of tax 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Equity in income of subsidiaries from discontinued operations 64bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
253bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(4,190)bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(937)bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Net loss (1,996)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(7,971)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(24,336)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
(13,109)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
Change in unrealized loss related to available-for-sale securities 1,070us-gaap_MarketableSecuritiesUnrealizedGainLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
  1,276us-gaap_MarketableSecuritiesUnrealizedGainLoss
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Comprehensive loss (926)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
  (23,060)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
 
Guarantor Subsidiaries        
Condensed Financial Statements, Captions [Line Items]        
Total revenue 299,359us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
270,021us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
565,123us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
563,191us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Home construction and land sales expenses 235,697us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
209,690us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
458,147us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
441,104us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Inventory impairments and option contract abandonments   880us-gaap_InventoryWriteDown
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
  911us-gaap_InventoryWriteDown
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Gross profit 63,662us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
59,451us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
106,976us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
121,176us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Commissions 11,969us-gaap_SalesCommissionsAndFees
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
11,096us-gaap_SalesCommissionsAndFees
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
22,895us-gaap_SalesCommissionsAndFees
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
22,917us-gaap_SalesCommissionsAndFees
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
General and administrative expenses 32,694us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
32,592us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
64,108us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
60,976us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Depreciation and amortization 2,781us-gaap_Depreciation
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
2,831us-gaap_Depreciation
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
5,122us-gaap_Depreciation
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
5,738us-gaap_Depreciation
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Operating income (loss) 16,218us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
12,932us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
14,851us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
31,545us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Equity in income (loss) of unconsolidated entities 82us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(17)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
224us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
302us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Loss on extinguishment of debt   0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
  0us-gaap_GainsLossesOnExtinguishmentOfDebt
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Other (expense) income, net (777)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
933us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(463)us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
1,212us-gaap_OtherNonoperatingIncomeExpense
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(Loss) income before income taxes 15,523us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
13,848us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
14,612us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
33,059us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(Benefit from) provision for income taxes 6,561us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
131us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
12,467us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
145us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Equity in income of subsidiaries 0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Loss from continuing operations 8,962us-gaap_IncomeLossFromContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
13,717us-gaap_IncomeLossFromContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
2,145us-gaap_IncomeLossFromContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
32,914us-gaap_IncomeLossFromContinuingOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Income (loss) from discontinued operations, net of tax 68us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
257us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(4,183)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(930)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Equity in income of subsidiaries from discontinued operations 0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Net loss 9,030us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
13,974us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
(2,038)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
31,984us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
Change in unrealized loss related to available-for-sale securities 0us-gaap_MarketableSecuritiesUnrealizedGainLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
  0us-gaap_MarketableSecuritiesUnrealizedGainLoss
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Comprehensive loss 9,030us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
  (2,038)us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ dei_LegalEntityAxis
= us-gaap_GuarantorSubsidiariesMember
 
Non-Guarantor Subsidiaries        
Condensed Financial Statements, Captions [Line Items]        
Total revenue 33us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
100us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
131us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
180us-gaap_RealEstateRevenueNet
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Home construction and land sales expenses 0us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
0us-gaap_HomeBuildingCosts
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Inventory impairments and option contract abandonments   0us-gaap_InventoryWriteDown
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
  0us-gaap_InventoryWriteDown
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
Gross profit 33us-gaap_GrossProfit
/ dei_LegalEntityAxis
= us-gaap_NonGuarantorSubsidiariesMember
100us-gaap_GrossProfit
/ dei_LegalEntityAxis
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131us-gaap_GrossProfit
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180us-gaap_GrossProfit
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0us-gaap_SalesCommissionsAndFees
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0us-gaap_SalesCommissionsAndFees
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0us-gaap_SalesCommissionsAndFees
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36us-gaap_GeneralAndAdministrativeExpense
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60us-gaap_GeneralAndAdministrativeExpense
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62us-gaap_GeneralAndAdministrativeExpense
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0us-gaap_Depreciation
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0us-gaap_Depreciation
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0us-gaap_Depreciation
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64us-gaap_OperatingIncomeLoss
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71us-gaap_OperatingIncomeLoss
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118us-gaap_OperatingIncomeLoss
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0us-gaap_IncomeLossFromEquityMethodInvestments
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0us-gaap_IncomeLossFromEquityMethodInvestments
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0us-gaap_IncomeLossFromEquityMethodInvestments
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Loss on extinguishment of debt   0us-gaap_GainsLossesOnExtinguishmentOfDebt
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  0us-gaap_GainsLossesOnExtinguishmentOfDebt
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(2)us-gaap_OtherNonoperatingIncomeExpense
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(4)us-gaap_OtherNonoperatingIncomeExpense
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(Loss) income before income taxes (1)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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63us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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69us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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114us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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23us-gaap_IncomeTaxExpenseBenefit
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0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
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0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
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0bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
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Loss from continuing operations (1)us-gaap_IncomeLossFromContinuingOperations
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40us-gaap_IncomeLossFromContinuingOperations
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44us-gaap_IncomeLossFromContinuingOperations
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74us-gaap_IncomeLossFromContinuingOperations
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Income (loss) from discontinued operations, net of tax (4)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
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(4)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
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(7)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
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(7)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
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Equity in income of subsidiaries from discontinued operations 0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
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0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
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0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
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0bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
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36us-gaap_NetIncomeLoss
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67us-gaap_NetIncomeLoss
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  0us-gaap_MarketableSecuritiesUnrealizedGainLoss
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Comprehensive loss (5)us-gaap_OtherComprehensiveIncomeLossNetOfTax
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  37us-gaap_OtherComprehensiveIncomeLossNetOfTax
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Consolidating Adjustments        
Condensed Financial Statements, Captions [Line Items]        
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(100)us-gaap_RealEstateRevenueNet
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(131)us-gaap_RealEstateRevenueNet
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(180)us-gaap_RealEstateRevenueNet
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Home construction and land sales expenses (33)us-gaap_HomeBuildingCosts
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(100)us-gaap_HomeBuildingCosts
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(131)us-gaap_HomeBuildingCosts
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(180)us-gaap_HomeBuildingCosts
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Inventory impairments and option contract abandonments   0us-gaap_InventoryWriteDown
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  0us-gaap_InventoryWriteDown
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0us-gaap_GrossProfit
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0us-gaap_GrossProfit
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0us-gaap_GrossProfit
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Commissions 0us-gaap_SalesCommissionsAndFees
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0us-gaap_SalesCommissionsAndFees
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0us-gaap_SalesCommissionsAndFees
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0us-gaap_SalesCommissionsAndFees
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General and administrative expenses 0us-gaap_GeneralAndAdministrativeExpense
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0us-gaap_GeneralAndAdministrativeExpense
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0us-gaap_GeneralAndAdministrativeExpense
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0us-gaap_GeneralAndAdministrativeExpense
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Depreciation and amortization 0us-gaap_Depreciation
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0us-gaap_Depreciation
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0us-gaap_Depreciation
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0us-gaap_Depreciation
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0us-gaap_OperatingIncomeLoss
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0us-gaap_OperatingIncomeLoss
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0us-gaap_OperatingIncomeLoss
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Equity in income (loss) of unconsolidated entities 0us-gaap_IncomeLossFromEquityMethodInvestments
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0us-gaap_IncomeLossFromEquityMethodInvestments
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0us-gaap_IncomeLossFromEquityMethodInvestments
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0us-gaap_IncomeLossFromEquityMethodInvestments
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Loss on extinguishment of debt   0us-gaap_GainsLossesOnExtinguishmentOfDebt
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  0us-gaap_GainsLossesOnExtinguishmentOfDebt
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0us-gaap_OtherNonoperatingIncomeExpense
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0us-gaap_OtherNonoperatingIncomeExpense
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0us-gaap_OtherNonoperatingIncomeExpense
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(Loss) income before income taxes 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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(Benefit from) provision for income taxes 0us-gaap_IncomeTaxExpenseBenefit
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0us-gaap_IncomeTaxExpenseBenefit
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0us-gaap_IncomeTaxExpenseBenefit
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0us-gaap_IncomeTaxExpenseBenefit
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Equity in income of subsidiaries (8,961)bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
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(13,757)bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
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(2,189)bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
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(32,988)bzh_EquityInLossIncomeOfSubsidiariesContinuingOperations
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Loss from continuing operations (8,961)us-gaap_IncomeLossFromContinuingOperations
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(13,757)us-gaap_IncomeLossFromContinuingOperations
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(2,189)us-gaap_IncomeLossFromContinuingOperations
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(32,988)us-gaap_IncomeLossFromContinuingOperations
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Income (loss) from discontinued operations, net of tax 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
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0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
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0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
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0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
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Equity in income of subsidiaries from discontinued operations (64)bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
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(253)bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
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4,190bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
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937bzh_EquityInLossIncomeOfSubsidiaryDiscontinuedOperations
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Net loss (9,025)us-gaap_NetIncomeLoss
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(14,010)us-gaap_NetIncomeLoss
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2,001us-gaap_NetIncomeLoss
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(32,051)us-gaap_NetIncomeLoss
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Change in unrealized loss related to available-for-sale securities 0us-gaap_MarketableSecuritiesUnrealizedGainLoss
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  0us-gaap_MarketableSecuritiesUnrealizedGainLoss
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Comprehensive loss $ (9,025)us-gaap_OtherComprehensiveIncomeLossNetOfTax
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  $ 2,001us-gaap_OtherComprehensiveIncomeLossNetOfTax
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