Stock-based Compensation (Tables)

3 Months Ended

Dec. 31, 2013

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,
	2013			2012
	(In thousands)
Stock-based compensation
Cost of sales	$	50		$	43
Research and development	649			522
Selling, general and administrative	949			875
Total stock-based compensation	1,648			1,440
Tax effect on stock-based compensation	(302		)	—
Net effect on net income	$	1,346		$	1,440
Compensation related to SARs included in total stock-based compensation	$	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, 2013 and 2012 were based on estimates at the date of grant as follows:

	Three Months Ended   December 31,
	2013			2012
Options
Weighted-average fair value of grants	$	4.54		$	4.32
Expected term in years	4.42			4.45
Estimated volatility	50		%	59		%
Risk-free interest rate	0.98		%	0.52		%
Dividend yield	—		%	—		%

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, 2013 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, 2013	5,351		5.477	$	7.51
Granted	1,118			$	10.96
Exercised	(406	)		$	6.28		$	2,135
Cancelled/Expired	(20	)		$	10.73
Outstanding at December 31, 2013	6,043			$	8.22	4.57	$	23,383
Exercisable at December 31, 2013	3,085			$	6.49	3.28	$	17,286
Vested and expected to vest after December 31, 2013	5,873			$	8.16	4.52	$	23,075

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, 2013 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, 2013	269		$	9.02
Granted	23		$	10.96
Vested	(82	)	$	8.70	$	948
Forfeited	(1	)	$	10.64
Outstanding at December 31, 2013	209		$	9.35	$	2,531

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, 2013 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, 2013	—	5.477	$	—
Granted	779		$	10.96
Exercised	—		$	—
Cancelled/Expired	—		$	—
Outstanding at December 31, 2013	779		$	10.96	6.86	$	880
Exercisable at December 31, 2013	—		$	—	—	$	—