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Earnings Per Share - Narrative (Details) (USD $) In Thousands, except Share data in Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Sep. 30, 2014
Stock Options |  |
Earnings Per Share [Line Items] |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities | 0.7 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_StatementEquityComponentsAxis = us-gaap_EmployeeStockOptionMember |
Nonvested Stock Awards |  |
Earnings Per Share [Line Items] |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities | 1.0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_StatementEquityComponentsAxis = bzh_NonvestedStockAwardsMember |
Tangible Equity Units |  |
Earnings Per Share [Line Items] |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities | 5.3 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / us-gaap_DebtInstrumentAxis = bzh_TangibleEquityUnitsMember |
Tangible Equity Units outstanding | 3.7 bzh_EquityInstrumentConvertibleNumberOfEquityInstruments / us-gaap_DebtInstrumentAxis = bzh_TangibleEquityUnitsMember |
Dividend | 25.00 us-gaap_SharePrice / us-gaap_DebtInstrumentAxis = bzh_TangibleEquityUnitsMember |
Shares of common stock issuable upon conversion | 5.3 us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments / us-gaap_DebtInstrumentAxis = bzh_TangibleEquityUnitsMember |
Debt Instrument, Convertible, Stock Price Trigger, Range One | TEU Senior Amortizing Notes |  |
Earnings Per Share [Line Items] |  |
Debt Instrument, Convertible, Conversion Ratio | 1.72414 us-gaap_DebtInstrumentConvertibleConversionRatio1 / us-gaap_DebtInstrumentAxis = bzh_TeuSeniorAmortizingNotesMaturingAugust2015Member / bzh_DebtInstrumentConvertibleStockPriceTriggerRangeAxis = bzh_DebtInstrumentConvertibleStockPriceTriggerRangeOneMember |
Debt Instrument, Convertible, Stock Price Trigger | 14.50 us-gaap_DebtInstrumentConvertibleStockPriceTrigger / us-gaap_DebtInstrumentAxis = bzh_TeuSeniorAmortizingNotesMaturingAugust2015Member / bzh_DebtInstrumentConvertibleStockPriceTriggerRangeAxis = bzh_DebtInstrumentConvertibleStockPriceTriggerRangeOneMember |
Debt Instrument, Convertible, Stock Price Trigger, Range Two | TEU Senior Amortizing Notes |  |
Earnings Per Share [Line Items] |  |
Debt Instrument, Convertible, Conversion Ratio | 1.40746 us-gaap_DebtInstrumentConvertibleConversionRatio1 / us-gaap_DebtInstrumentAxis = bzh_TeuSeniorAmortizingNotesMaturingAugust2015Member / bzh_DebtInstrumentConvertibleStockPriceTriggerRangeAxis = bzh_DebtInstrumentConvertibleStockPriceTriggerRangeTwoMember |
Debt Instrument, Convertible, Stock Price Trigger | 17.75 us-gaap_DebtInstrumentConvertibleStockPriceTrigger / us-gaap_DebtInstrumentAxis = bzh_TeuSeniorAmortizingNotesMaturingAugust2015Member / bzh_DebtInstrumentConvertibleStockPriceTriggerRangeAxis = bzh_DebtInstrumentConvertibleStockPriceTriggerRangeTwoMember |
Senior Notes | TEU Senior Amortizing Notes |  |
Earnings Per Share [Line Items] |  |
Senior notes | 3,401 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = bzh_TeuSeniorAmortizingNotesMaturingAugust2015Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember | $ 6,703 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = bzh_TeuSeniorAmortizingNotesMaturingAugust2015Member / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 + Details
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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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