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Retirement Plan and Incentive Awards (Details) (USD $) | 12 Months Ended
--- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $ 1,500,000 |  |  |
Employer matching contribution (percentage) | 50.00% |  |  |
Maximum percentage of employee gross pay subject to employer match | 6.00% |  |  |
Total employer contributions during period | 1,100,000 | 1,300,000 |  | 1,500,000
Total matching contributions forfeited by plan participants during period | 500,000 | 300,000 |  | 200,000
Deferred compensation plan liabilities | 25,579,000 | 24,612,000 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | 300,000 |  |  |
Intrinsic value of SSARs/stock options vested and expected to vest | 1,500,000 |  |  |
Unrecognized compensation cost | 1,000,000 | 2,100,000 |  |
Weighted average period to recognize remaining cost | 1 year 2 months 12 days |  |  |
SSARs and Stock Options |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Weighted average expected life of the SSARs / stock options vested and expected to vest | 2 years 7 months 12 days |  |  |
Non-cash stock based compensation expense | 900,000 | 1,500,000 |  | 3,400,000
Performance-based restricted stock issued | 160,651 | 109,507 |  | 150,853
Dividend yield for the Company | 0.00% | 0.00% |  | 0.00%
Expected price volatitlity | 46.15% | 44.77% |  | 51.70%
Risk-free interest rate | 0.63% | 0.90% |  | 1.22%
Performance Shares |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Performance-based restricted stock issued | 31,532 |  |  |
Estimated fair value of nonvested stock ($ per share) | $ 5.02 |  |  |
Dividend yield for the Company | 0.00% |  |  |
Risk-free interest rate | 0.34% |  |  |
Restricted Stock |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Unvested restricted stock returned (shares) |  | (10,502) | [1] |
Nonvested Stock Awards and Performance Shares |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Non-cash stock based compensation expense | 2,000,000 | 2,600,000 |  | 3,800,000
Performance-based restricted stock issued | 99,413 | 179,913 |  | 150,853
Estimated fair value of nonvested stock ($ per share) | $ 10.95 | $ 7.19 |  | $ 23.45
Unvested restricted stock returned (shares) | 0 | 0 | [1] | (10,502)
Minimum |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Employee deferral and contribution percentage | 1.00% |  |  |
Minimum | Performance Shares |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Expected price volatitlity | 35.60% |  |  |
Maximum |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Employee deferral and contribution percentage | 80.00% |  |  |
Maximum | Performance Shares |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Expected price volatitlity | 60.40% |  |  |
Beazer Homes USA Inc. Deferred Compensation Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Deferred compensation plan assets | 700,000 | 1,100,000 |  |
Deferred compensation plan liabilities | 2,300,000 | 2,400,000 |  |
Deferred compensation plan employer contributions during period | $ 215,000 | $ 205,000 |  | $ 197,000
2010 Stock Incentive Plan |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Shares of common stock reserved for issuance under plan | 900,000 |  |  |
Shares of common stock available for future grants | 300,000 |  |  |
[1] | (a) Our former Chief Executive Offer returned 10,502 shares of unvested restricted stock in accordance with his consent agreement with the Securities and Exchange Commission.

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