Stock-Based Compensation Plans (Tables)

12 Months Ended

Sep. 30, 2012

Stock-Based Compensation Plans [Abstract]

Schedule of stock-based compensation expenses

	2012		2011		2010
Product costs	$	35	$	79	$	60
Research and development		511		1,156		2,466
Selling, general and administrative		2,125		2,415		2,061
Total continuing operations		2,671		3,650		4,587
Discontinued operations		62		602		1,288
Total stock-based compensation expense	$	2,733	$	4,252	$	5,875

Schedule of stock option plans

	2012			2011			2010
Risk-free interest rates		0.82	%		1.45	%		1.95	%
Expected life		4.8 years			4.8 years			4.8 years
Expected volatility		50	%		45	%		41	%
Dividend yield		0	%		0	%		0	%

Schedule of stock option activity

	Number of Shares			Weighted Average Exercise Price
Outstanding at September 30, 2009		1,669,570		$	32.82
Granted		388,635			22.88
Exercised		(20,350	)		20.74
Forfeited		(545,534	)		30.58
Outstanding at September 30, 2010		1,492,321		$	31.22
Granted		551,773			9.96
Exercised		—			—
Forfeited		(528,906	)		25.15
Outstanding at September 30, 2011		1,515,188		$	25.59
Granted		299,832			12.46
Exercised		(11,379	)		10.03
Forfeited		(478,203	)		29.76
Outstanding at September 30, 2012		1,325,438		$	21.25
Exercisable at September 30, 2012		661,006		$	29.67

Schedule of restricted stock awards activity

	Number of Shares			Weighted Average Grant Price
Balance at September 30, 2009		100,895		$	35.80
Granted		30,440			18.49
Vested		(83,195	)		36.32
Forfeited		(7,068	)		33.39
Balance at September 30, 2010		41,072		$	22.33
Granted		66,533			10.01
Vested		(23,978	)		19.38
Forfeited		(11,000	)		20.79
Balance at September 30, 2011		72,627		$	12.25
Vested		(67,627	)		11.52
Forfeited		(1,000	)		22.35
Balance at September 30, 2012		4,000		$	22.11

Schedule of Fair value at the date of grant

Performance Period	Minimum Shares		Target Shares		Maximum Shares
Fiscal 2011 — 2013		13,707		68,533		137,066
Fiscal 2012 — 2014		12,499		62,497		124,994