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Description of Business (Details) | Mar. 31, 2015 state
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Number of States [Abstract] |
Number of states in which home building segments operate | 15 us-gaap_NumberOfStatesInWhichEntityOperates

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- Details
Name: | bzh_NumberofStatesAbstract
Namespace Prefix: | bzh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant