Stock-Based Compensation Plans (Tables)

12 Months Ended

Sep. 30, 2015

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

The Company’s stock-based compensation expenses for the years ended September 30 were allocated to the following expense categories

	2015		2014		2013
Product costs	$	24	$	16	$	22
Research and development		226		175		180
Selling, general and administrative		2,131		3,146		2,350
Total stock-based compensation expense	$	2,381	$	3,337	$	2,552

Assumptions Used in Stock Option Plans

The assumptions used as inputs in the model for the years ended September 30 were as follows:

	2015			2014			2013
Risk-free interest rates		1.43	%		1.19	%		0.60	%
Expected life	4.5 years			4.6 years			4.8 years
Expected volatility		43	%		45	%		49	%
Dividend yield		0	%		0	%		0	%

Schedule of Stock Option Activity

The following table summarizes all stock options activity and stock options outstanding and exercisable under the stock option plans during fiscal 2015, 2014 and 2013:

	Number of Shares			Weighted Average Exercise Price
Outstanding at September 30, 2012		1,325,438		$	21.25
Granted		178,924			20.85
Exercised		(10,273	)		14.40
Forfeited		(125,105	)		33.47
Outstanding at September 30, 2013		1,368,984			20.13
Granted		138,837			22.71
Exercised		(190,434	)		14.42
Forfeited		(106,768	)		31.26
Outstanding at September 30, 2014		1,210,619			20.35
Granted		164,401			21.24
Exercised		(166,422	)		14.54
Forfeited		(90,590	)		35.35
Outstanding at September 30, 2015		1,118,008			20.10
Exercisable at September 30, 2015		797,045		$	20.04

Schedule of Restricted Stock Awards Activity

The following table summarizes all restricted stock awards activity during fiscal 2015, 2014 and 2013:

	Number of Shares			Weighted Average Grant Price
Balance at September 30, 2012		4,000		$	22.11
Vested		5,234			23.88
Forfeited		(4,000	)		22.11
Balance at September 30, 2013		5,234			23.88
Granted		22,155			22.67
Vested		(7,991	)		23.98
Forfeited		(774	)		22.58
Balance at September 30, 2014		18,624			22.45
Granted		18,073			21.84
Vested		(7,606	)		22.28
Forfeited		(1,316	)		22.16
Balance at September 30, 2015		27,775		$	22.12

Schedule of Fair Value at the Date of Grant

The aggregate number of shares that could be awarded to key employees if the minimum, target and maximum performance goals are met, based upon the fair value at the date of grant is as follows:

Performance Period	Minimum Shares		Target Shares		Maximum Shares
Fiscal 2013 – 2015		8,551		42,753		85,506
Fiscal 2014 - 2016		7,861		39,303		78,606
Fiscal 2015 – 2017		8,440		42,199		84,398