Consolidated Tangible Net Worth

No definition available.

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- Definition

Conversion of Debt, Triggering Event, Percentage of Debt Instrument, at Par, Required to be Offered for Purchase

+ References

No definition available.

+ Details

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- Definition

Conversion of Debt, Triggering Event, Value of Consolidated Tangible Net Worth

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Interest Rate, Effective Period

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Original Amount of Debt That Could Be Repurchased

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Debt Instrument, Redemption Option, Percent of Par

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Debt Instrument, Repurchase Percentage - Percentage of original amount of debt instrument to be repurchased

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Debt Issuance Discount - percentage of face amount by which issuance proceeds were reduced.

+ References

No definition available.

+ Details

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Namespace Prefix:	bzh_
Data Type:	num:percentItemType
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Period Type:	instant

- Definition

Line of Credit Facility, Number of Lenders

+ References

No definition available.

+ Details

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- Definition

Stock Exchange, Debt Related to Tangible Equity Unit

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Tangible Equity Units TEUs Converted

+ References

No definition available.

+ Details

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- Definition

Tangible Equity Units (TEUs) Issued During Period, Units

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

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-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph e

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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

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-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 2

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-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12355-112629

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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Period Type:	instant

- Details

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- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

+ Details

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: 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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Line-of-Credit Arrangement

-URI http://asc.fasb.org/extlink&oid=6517033

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 45

-Paragraph 13

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-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 45

-Paragraph 14

-URI http://asc.fasb.org/extlink&oid=28361426&loc=d3e1336-112600

+ Details

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- Definition

The carrying amount, as of the date of the latest financial statement presented, of real estate owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 50

-Paragraph 1A

-Subparagraph (b)(1)(i)

-URI http://asc.fasb.org/extlink&oid=34720971&loc=SL6224234-111729

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Borrowings - Narrative (Details) (USD $)	3 Months Ended		6 Months Ended		1 Months Ended	3 Months Ended	12 Months Ended
Borrowings - Narrative (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Jul. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Apr. 30, 2014	Feb. 28, 2013	Jul. 17, 2012 TEUs	Jan. 15, 2010	Nov. 10, 2014 lender
Line of Credit Facility [Abstract]
Amount of available borrowings under the Secured Revolving Credit Facility	$ 123,400,000		$ 123,400,000
Outstanding borrowings under the Secured Revolving Credit Facility	26,600,000us-gaap_LineOfCredit		26,600,000us-gaap_LineOfCredit
Senior Notes [Abstract]
Consolidated Tangible Net Worth	238,100,000bzh_ConsolidatedTangibleNetWorth		238,100,000bzh_ConsolidatedTangibleNetWorth
Loss on extinguishment of debt	0	(153,000)	0	(153,000)
Junior Subordinated Notes [Abstract]
Unamortized accretion	4,019,000		4,019,000				4,399,000
Secured Debt [Abstract]
Long-term debt	1,535,172,000us-gaap_LongTermDebt		1,535,172,000us-gaap_LongTermDebt				1,535,433,000us-gaap_LongTermDebt
Senior Notes
Senior Notes [Abstract]
Minimum consolidated tangible net worth	85,000,000		85,000,000
Percentage of debt, at par, required to be offered for purchase	10.00%		10.00%
Amount of original debt that could be repurchased	27,500,000		27,500,000
Junior Subordinated Notes [Abstract]
Unamortized accretion	4,019,000		4,019,000				4,399,000
Secured Debt [Abstract]
Long-term debt	1,432,261,000		1,432,261,000				1,435,183,000
Senior Notes \| 5 3/4% Senior Notes Maturing June 2019
Senior Notes [Abstract]
Aggregate principal amount of debt								325,000,000
Stated interest rate on debt instrument (percent)	5.75%		5.75%				0.00%	5.75%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed					100.00%
Junior Subordinated Notes [Abstract]
Debt Instrument, Redemption Price, Percentage	35.00%
Senior Notes \| 5 3/4% Senior Notes Maturing June 2019 \| Optional Redemption Under Indenture
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	105.75%		105.75%
Debt Instrument, Redemption Price, Percentage	65.00%
Senior Notes \| 5 3/4% Senior Notes Maturing June 2019 \| In Compliance
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	100.00%		100.00%				0.00%
Senior Notes \| 9 1/8% Senior Notes Maturing June 2018
Senior Notes [Abstract]
Call price and make-whole premiums provided for by 2018 Notes	17,200,000
Loss on extinguishment of debt	(19,800,000)
Senior Notes \| 7 1/2% Senior Notes Maturing September 2021
Senior Notes [Abstract]
Aggregate principal amount of debt						200,000,000
Stated interest rate on debt instrument (percent)	7.50%		7.50%			7.50%	7.50%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed						100.00%
Debt Issuance Discount						98.541%
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	100.00%		100.00%
Debt Instrument, Redemption Price, Percentage	35.00%
Senior Notes \| 7 1/2% Senior Notes Maturing September 2021 \| Minimum
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	100.00%		100.00%
Senior Notes \| 7 1/2% Senior Notes Maturing September 2021 \| Maximum
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	105.625%		105.625%
Senior Notes \| 7 1/2% Senior Notes Maturing September 2021 \| Optional Redemption Under Indenture
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	107.50%		107.50%
Debt Instrument, Repurchase Percentage	65.00%		65.00%
Senior Notes \| 7 1/4% Senior Notes Maturing February 2023
Senior Notes [Abstract]
Aggregate principal amount of debt									200,000,000
Stated interest rate on debt instrument (percent)	7.25%		7.25%				7.25%		7.25%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed						100.00%
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	100.00%		100.00%
Debt Instrument, Redemption Price, Percentage	35.00%
Senior Notes \| 7 1/4% Senior Notes Maturing February 2023 \| Minimum
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	100.00%		100.00%
Senior Notes \| 7 1/4% Senior Notes Maturing February 2023 \| Maximum
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	103.625%		103.625%
Senior Notes \| 7 1/4% Senior Notes Maturing February 2023 \| Optional Redemption Under Indenture
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	107.25%		107.25%
Debt Instrument, Redemption Price, Percentage	65.00%
Senior Notes \| 7 1/4% Senior Notes Maturing February 2023 \| In Compliance
Junior Subordinated Notes [Abstract]
Debt instrument redemption price (percent)	101.00%		101.00%
Senior Notes \| 6.625% Senior Secured Notes
Senior Notes [Abstract]
Stated interest rate on debt instrument (percent)	6.625%		6.625%				6.625%
Senior Notes \| 9 1/8% Senior Notes Maturing May 2019
Senior Notes [Abstract]
Stated interest rate on debt instrument (percent)	9.125%		9.125%				9.125%
Senior Notes \| 8 1/8% Senior Notes Maturing June 2016
Senior Notes [Abstract]
Stated interest rate on debt instrument (percent)	8.125%		8.125%				8.125%
Senior Notes \| Tangible Equity Units
Senior Notes [Abstract]
Stated interest rate on debt instrument (percent)										7.50%
Tangible Equity Units TEUs Converted							890,000
Stock Exchange, Debt Related to Tangible Equity Unit							2,400,000
Tangible Capital [Abstract]
Tangible Equity Units (TEUs) issued during period, (units)										4,600,000
Junior Subordinated Notes
Senior Notes [Abstract]
Aggregate principal amount of debt	103,100,000		103,100,000								75,000,000
Stated interest rate on debt instrument (percent)	7.987%		7.987%
Junior Subordinated Notes [Abstract]
Effective period of debt instrument interest rate			10 years
Unamortized accretion	44,000,000		44,000,000
Secured Debt [Abstract]
Long-term debt	56,770,000		56,770,000				55,737,000
Cash Secured Loan
Secured Debt [Abstract]
Three-month LIBOR			LIBOR
Long-term debt	22,368,000		22,368,000				22,368,000
Other Secured Notes Payable
Secured Debt [Abstract]
Long-term debt	23,773,000		23,773,000				22,145,000
Weighted average fixed interest rate of debt (percent)	4.69%		4.69%
Secured Revolving Credit Facility
Line of Credit Facility [Abstract]
Credit facility borrowing capacity	150,000,000		150,000,000
Inventory assets pledged as collateral	1,000,000,000		1,000,000,000
Outstanding borrowings under the Secured Revolving Credit Facility	0		0				0
Secured Debt [Abstract]
Line of Credit Facility, Number of Lenders												4
Line of Credit Facility, Expiration Period			1 year
Letter of Credit, Cash Secured [Member]
Line of Credit Facility [Abstract]
Letters of credit secured using cash collateral	16,000,000		16,000,000				39,100,000
Revolving Credit Facility Future Amount [Member]
Line of Credit Facility [Abstract]
Line of Credit, Current	20,000,000		20,000,000
Secured Debt [Abstract]
Long-term Line of Credit, Noncurrent	$ 130,000,000		$ 130,000,000
Number of Lenders No Credit Extension [Domain]
Secured Debt [Abstract]
Line of Credit Facility, Number of Lenders												1
Number of Lenders Extending Credit Facility [Domain]
Secured Debt [Abstract]
Line of Credit Facility, Number of Lenders												3
London Interbank Offered Rate (LIBOR) [Member] \| Cash Secured Loan
Secured Debt [Abstract]
Spread on variable interest rate (percent)			0.40%