Stock-Based Compensation (Details) (USD $)
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12 Months Ended | 12 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2014
Stock Options
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Sep. 30, 2014
Restricted Stock Units
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Sep. 30, 2014
The 2014 Plan
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Jan. 27, 2014
The 2014 Plan
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Sep. 30, 2014
The 2014 Plan
Stock Options
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Jan. 28, 2013
The 2013 Plan
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Sep. 30, 2014
The 2013 Plan
Stock Options
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Jan. 25, 2010
The Omnibus Plan
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Dec. 04, 2009
The Omnibus Plan
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Sep. 30, 2014
The Stock Option Plan and Non-Officer Plan
Stock Options
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Jan. 27, 2014
The Purchase Plan
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Sep. 30, 2014
The Purchase Plan
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Sep. 30, 2013
The Purchase Plan
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Sep. 30, 2012
The Purchase Plan
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Jan. 27, 2014
The Purchase Plan
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Sep. 30, 2014
Director [Member]
The 2014 Plan
Restricted Stock Units
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Sep. 30, 2014
Director [Member]
The 2013 Plan
Restricted Stock Units
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Sep. 30, 2014
Executive Officer [Member]
The 2014 Plan
Restricted Stock Units
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||||
Number of shares authorized | 2,250,000 | 1,750,000 | 5,750,000 | 2,800,000 | |||||||||||||||||
Expiration period | 8 years | 8 years | 10 years | ||||||||||||||||||
Vesting period | 4 years | 4 years | 4 years | 1 year | 1 year | 3 years | |||||||||||||||
Number of shares available for future grants | 1,844,072 | ||||||||||||||||||||
Number of additional shares authorized | 2,500,000 | 800,000 | |||||||||||||||||||
Proceeds from stock option plan transactions | $ 3,689,000 | $ 2,193,000 | $ 1,072,000 | ||||||||||||||||||
Excess tax benefits from stock-based compensation | (44,000) | (67,000) | (198,000) | ||||||||||||||||||
Number of continuous days of service | 90 days | ||||||||||||||||||||
Number of hours per week employed | 20 hours | ||||||||||||||||||||
Percent of market value | 85.00% | ||||||||||||||||||||
Offering period | 3 months | ||||||||||||||||||||
Employee contributions | 1,000,000 | 1,000,000 | 1,000,000 | ||||||||||||||||||
Common shares issued to employees | 129,449 | 128,853 | 115,477 | ||||||||||||||||||
Shares available for future issuance | 741,378 | ||||||||||||||||||||
Total intrinsic value of all options exercised | 500,000 | 500,000 | 700,000 | ||||||||||||||||||
Forfeiture rate | 2.00% | ||||||||||||||||||||
Total unrecognized compensation cost nonvested awards | 6,700,000 | ||||||||||||||||||||
Total grant date fair value of shares vested | 800,000 | 3,100,000 | 3,000,000 | ||||||||||||||||||
Total unrecognized compensation cost, restricted stock units | $ 1,100,000 | ||||||||||||||||||||
Weighted average period, unrecognized compensation cost, nonvested awards | 2 years 3 months 21 days | 1 year 1 month 27 days |