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Stock-Based Compensation (Tables) | 9 Months Ended
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Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Stock-Based Compensation Expense | Stock-based compensation expense is included in the consolidated results of operations as follows (in thousands):
| Three months ended June 30, |  | Nine months ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Cost of sales | $ | 88 |  |  | $ | 92 |  |  | $ | 277 |  |  | $ | 242 |
Sales and marketing | 283 |  |  | 285 |  |  | 932 |  |  | 853 |
Research and development | 193 |  |  | 176 |  |  | 581 |  |  | 559 |
General and administrative | 476 |  |  | 537 |  |  | 1,472 |  |  | 1,506 |
Stock-based compensation before income taxes | 1,040 |  |  | 1,090 |  |  | 3,262 |  |  | 3,160 |
Income tax benefit | (366 | ) |  | (378 | ) |  | (1,141 | ) |  | (1,081 | )
Stock-based compensation after income taxes | $ | 674 |  |  | $ | 712 |  |  | $ | 2,121 |  |  | $ | 2,079 |
Schedule of Stock Option Activity | The following table summarizes our stock option activity (in thousands, except per common share amounts):
|  | Options Outstanding |  | Weighted Average Exercised Price |  | Weighted Average Contractual Term (in years) |  | Aggregate Intrinsic Value (1)
Balance at September 30, 2014 |  | 6,029 |  |  | $10.61 |  |  |  |
Granted |  | 810 |  |  | 8.12 |  |  |  |
Exercised |  | (714 | ) |  | 8.87 |  |  |  |
Forfeited / Canceled |  | (1,230 | ) |  | 11.59 |  |  |  |
Balance at June 30, 2015 |  | 4,895 |  |  | $10.21 |  | 5.2 |  | $ | 2,209 |
Exercisable at June 30, 2015 |  | 3,498 |  |  | $10.68 |  | 4.4 |  | $ | 984 |
(1) The aggregate intrinsic value represents the total pre-tax intrinsic value, based on our closing stock price of $9.55 as of June 30, 2015, which would have been received by the option holders had all option holders exercised their options as of that date. The intrinsic value of an option is the amount by which the fair value of the underlying stock exceeds its exercise price.
Schedule of Valuation Assumptions | The table below shows the weighted average fair value, which was determined based upon the fair value of each option on the grant date utilizing the Black-Scholes option-pricing model and the related assumptions:
| Nine months ended June 30,
| 2015 |  | 2014
Weighted average per option grant date fair value | $2.98 |  | $4.38
Assumptions used for option grants: |  |  |
Risk free interest rate | 1.57% - 1.85% |  | 1.76% - 2.02%
Expected term | 6.00 years |  | 6.00 years
Expected volatility | 32% - 36% |  | 39% - 40%
Weighted average volatility | 35% |  | 40%
Expected dividend yield | 0 |  | 0
Schedule of Nonvested Restricted Stock Units | A summary of our non-vested restricted stock units as of June 30, 2015 and changes during the nine months then ended is presented below (in thousands, except per common share amounts):
| Number of Awards |  | Weighted Average Grant Date Fair Value
Nonvested at September 30, 2014 | 171 |  |  | $ | 9.35 |
Granted | 490 |  |  | $ | 8.22 |
Vested | (81 | ) |  | $ | 9.60 |
Canceled | (30 | ) |  | $ | 7.90 |
Nonvested at June 30, 2015 | 550 |  |  | $ | 8.39 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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