CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (USD $) In Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Balance, beginning at Dec. 31, 2011	$ 44	$ 463,440	$ (388,674)	$ (268)	$ (2,741)	$ 71,801
Balance, beginning (in shares) at Dec. 31, 2011	34,046				(200)
Net loss			(13,086)			(13,086)
Other comprehensive income				8		8
Compensation expenses for share-based payment arrangements		2,609				2,609
Exercise of stock options		82				82
Exercise of stock options (in shares)	16
Balance, ending at Mar. 31, 2012	44	466,131	(401,760)	(260)	(2,741)	61,414
Balance, ending (in shares) at Mar. 31, 2012	34,062				(200)
Balance, beginning at Dec. 31, 2012	61	493,613	(424,105)	(260)	(2,741)	66,568
Balance, beginning (in shares) at Dec. 31, 2012	46,765				(200)
Net loss			(11,258)			(11,258)
Other comprehensive income				8		8
Compensation expenses for share-based payment arrangements		749				749
Acquisition of subsidiary, net of issuance costs	6	11,214				11,220
Stock Issued During Period, Shares, Acquisitions	4,472
Exercise of stock options		3				3
Exercise of stock options (in shares)	1
Balance, ending at Mar. 31, 2013	$ 67	$ 505,579	$ (435,363)	$ (252)	$ (2,741)	$ 67,290
Balance, ending (in shares) at Mar. 31, 2013	51,238				(200)