Stock-based Compensation (Tables)

3 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The following table outlines the effects of total stock-based compensation including expense related to SARs.

	Three Months Ended   December 31,
	2014			2013
	(In thousands)
Stock-based compensation
Cost of sales	$	51		$	50
Research and development	767			649
Selling, general and administrative	1,234			949
Total stock-based compensation	2,052			1,648
Tax effect on stock-based compensation	(420		)	(302		)
Net effect on net income	$	1,632		$	1,346
Compensation related to SARs included in total stock-based compensation	$	526		$	157

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value

The weighted average estimated fair values of stock option grants and rights granted under the ESPP, as well as the weighted average assumptions used in calculating these values during the three month periods ended December 31, 2014 and 2013 were based on estimates at the date of grant as follows:

	Three Months Ended   December 31,
	2014			2013
Options
Weighted-average fair value of grants	$	3.86		$	4.54
Expected term in years	4.27			4.42
Estimated volatility	39		%	50		%
Risk-free interest rate	1.29		%	0.98		%
Dividend yield	1.74		%	—		%

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable

A summary of the Company’s stock option activity and related information for the three months ended December 31, 2014 follows (number of shares and aggregate intrinsic value are presented in thousands):

	Number of Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term in Years	Aggregate Intrinsic Value
Outstanding at September 30, 2014	4,240		$	8.10
Granted	46		$	13.54
Exercised	(385	)	$	7.19		$	3,302
Cancelled/Expired	(7	)	$	10.22
Outstanding at December 31, 2014	3,894		$	8.25	3.63	$	32,414
Exercisable at December 31, 2014	2,631		$	7.26	2.96	$	24,481
Vested and expected to vest after December 31, 2014	3,844		$	8.22	3.61	$	32,114

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of the Company’s RSU activity and related information for the three months ended December 31, 2014 under the 2007 Plan follows (number of shares and aggregate intrinsic value are presented in thousands):

	Number of Shares		Weighted-Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at September 30, 2014	262		$	9.91
Granted	228		$	13.54
Vested	(100	)	$	9.19	$	1,376
Forfeited	—		$	9.72
Outstanding at December 31, 2014	390		$	12.22	$	6,455

Schedule of Share-based Compensation, Stock Appreciation Rights Award Activity

A summary of the Company’s SAR activity and related information for the three months ended December 31, 2014 under the 2007 Plan follows (number of shares and aggregate intrinsic value are presented in thousands):

	Number of Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term in Years	Aggregate Intrinsic Value
Outstanding at September 30, 2014	747		$	10.96
Granted	680		$	13.54
Exercised	(23	)	$	10.96		$	112
Cancelled/Expired	(5	)	$	11.98
Outstanding at December 31, 2014	1,399		$	12.21	6.33	$	6,101
Exercisable at December 31, 2014	175		$	10.96	5.85	$	983