Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Preferred Stock [Member]	Common Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2011	$ 27,035		$ 127,318	$ (631)	$ (99,652)
Balance, Shares at Dec. 31, 2011			10,874,050
Exercise of stock options	205		205
Exercise of stock options, Shares	90,786		84,411
Share-based compensation, including issuance of restricted stock	951		951
Share-based compensation, including issuance of restricted stock, Shares			106,756
Comprehensive income (loss):
Net income (loss)	916				916
Foreign currency translation adjustment, net of tax	(114)			(114)
Change in unrealized gains on investments, net of tax	12			12
Balance at Dec. 31, 2012	29,005		128,474	(733)	(98,736)
Balance, Shares at Dec. 31, 2012	11,065,217		11,065,217
Exercise of stock options	51		51
Exercise of stock options, Shares	31,925		36,050
Share-based compensation, including issuance of restricted stock	898		898
Share-based compensation, including issuance of restricted stock, Shares			193,415
Comprehensive income (loss):
Net income (loss)	(5,257)				(5,257)
Foreign currency translation adjustment, net of tax	(24)			(24)
Change in unrealized gains on investments, net of tax	(2)			(2)
Balance at Dec. 31, 2013	$ 24,671		$ 129,423	$ (759)	$ (103,993)
Balance, Shares at Dec. 31, 2013	11,294,682		11,294,682