SHAREHOLDERS' EQUITY (Tables)

6 Months Ended

Jun. 30, 2013

Equity [Abstract]

Shareholders equity

	Series A Nonconvertible							Additional					Accumulated Other								Total
	Preferred Stock			Common Stock				Paid-In		Accumulated			Comprehensive			Treasury Stock					Shareholders’
	Shares	Amount		Shares		Amount		Capital		Deficit			Loss			Shares		Amount			Equity
Balance, January 1, 2013	200,000	$	2	46,561,437		$	465	$	564,883	$	(204,211	)	$	(5,702	)	(205,902	)	$	(5,202	)	$	350,235
Net income	—	—		—		—		—		10,624			—			—		—			10,624
Other comprehensive income	—	—		—		—		—		—			375			—		—			375
Repurchase of common stock	—	—		—		—		—		—			—			(195,599	)	(5,456		)	(5,456		)
Exercise of common stock options, net of tendered shares	—	—		24,020		—		271		—			—			—		—			271
Stock-based employee compensation, net of shares withheld for employee taxes (A)	—	—		(13,882	)	—		328		—			—			—		—			328
Issuance of common stock to Board of Directors and Scientific Advisory Board (B)	—	—		29,153		1		693		—			—			—		—			694
Issuance of common stock under an Employee Stock Purchase Plan	—	—		7,775		—		234		—			—			—		—			234
Balance, June 30, 2013	200,000	$	2	46,608,503		$	466	$	566,409	$	(193,587	)	$	(5,327	)	(401,501	)	$	(10,658	)	$	357,305

(A) Includes $435 (13,356 shares) that was accrued for in a previous period and charged to expense when earned, but issued in 2013, less shares withheld for taxes in the amount of $153 (4,672 shares).

(B) Includes $300 (9,212 shares) that was earned in a previous period and charged to expense when earned, but issued in 2013.