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Summary of Significant Accounting Policies (Stock-Based Compensation) (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2013 USD ($) Employees $ / shares shares | Mar. 31, 2014 USD ($) $ / shares shares | Sep. 30, 2015 USD ($) $ / shares shares | Sep. 30, 2014 USD ($) shares | Sep. 30, 2013 USD ($) $ / shares shares | Jun. 30, 2014 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Percentage of unvested stock options approved for acceleration |  | 50.00% |  |  |  |  |
Effect on income before income taxes | $ |  |  | $ (1,162) | $ (795) | $ (2,472) | [1] |
Effect on income taxes | $ |  |  | 221 | 326 | 512 |  |
Effect on net income | $ |  |  | $ (941) | $ (469) | $ (1,960) |  |
Restricted Stock | Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Option vesting period (in years) |  |  | 4 years |  |  |  |
Restricted Stock | Minimum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Option vesting period (in years) |  |  | 2 years |  |  |  |
Stock Options |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Exercise price | $ 17.12 |  |  |  |  |  |
Number of employees holding options | Employees | 110 |  |  |  |  |  |
Shares of common stock to be purchased as result of acceleration of the vesting | shares |  | 400,000 |  |  |  |  |
Nonvested awards, total compensation cost not yet recognized | $ | $ 900 |  |  |  |  |  |
Exercisable at end of period, weighted average exercise price (usd per share) |  |  | $ 9.74 |  | $ 7.13 |  | $ 8.18
Options, forfeitures in period | shares |  |  | 35,875 | 5,506 | 136,126 |  |
Expiration period |  |  | 10 years |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] |  |  |  |  |  |  |
Risk free interest rate |  |  | 2.00% | 2.00% | 1.00% |  |
Expected life (in years) |  |  | 6 years | 6 years | 6 years |  |
Dividend rate |  |  | 0.00% | 0.00% | 0.00% |  |
Volatility |  |  | 67.00% | 69.00% | 70.00% |  |
Stock Options | Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expiration period |  |  | 10 years |  |  |  |
Option vesting period (in years) |  |  | 4 years |  |  |  |
Stock Options | Minimum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Option vesting period (in years) |  |  | 2 years |  |  |  |
One Half of Unvested Stock Options | Stock Options |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Exercise price |  | $ 2.95 |  |  |  |  |
Remaining Unvested Stock Options | Stock Options |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Exercise price range, lower range limit |  | 6.15 |  |  |  |  |
Exercise price range, upper range limit |  | $ 7.98 |  |  |  |  |
Accelerated | Stock Options |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Exercisable at end of period, weighted average exercise price (usd per share) | $ 5.77 |  |  |  |  |  |
Vested and Unvested | Stock Options |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Options, forfeitures in period | shares | 100,000 |  |  |  |  |  |
Vested | Stock Options |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Exercise price | $ 14.79 |  |  |  |  |  |
Unvested | Stock Options |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Exercise price | $ 17.12 |  |  |  |  |  |
Effect on income before income taxes | $ |  | $ (300) |  |  |  |  |
[1] | (1) Stock-based compensation expense is included in selling, general and administrative expense

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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