Consolidated Statements Of Shareholders' Equity (USD $) In Thousands, except Share data	Preferred Stock [Member]	Common Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2009		$ 123,572	$ (746)	$ (105,352)	$ 17,474
Balance, shares at Dec. 31, 2009		10,162,589
Net income (loss)				6,163	6,163
Foreign currency translation adjustment			(7)		(7)
Change of/in unrealized gain on investments			308		308
Comprehensive income (loss)					6,464
Exercise of stock options		383			383
Exercise of stock options, shares		158,471
Share-based payments, including issuance of restricted stock		761			761
Share-based payments, including issuance of restricted stock, shares		94,481
Balance at Dec. 31, 2010		124,716	(445)	(99,189)	25,082
Balance, shares at Dec. 31, 2010		10,415,541			10,415,541
Net income (loss)				(463)	(463)
Foreign currency translation adjustment			(171)		(171)
Change of/in unrealized gain on investments			(15)		(15)
Comprehensive income (loss)					24,433
Exercise of stock options		424			424
Exercise of stock options, shares		208,821
Share-based payments, including issuance of restricted stock		2,178			2,178
Share-based payments, including issuance of restricted stock, shares		249,688
Balance at Dec. 31, 2011		$ 127,318	$ (631)	$ (99,652)	$ 27,035
Balance, shares at Dec. 31, 2011		10,874,050			10,874,050