Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2012	$ 29,005	$ 128,474	$ (733)	$ (98,736)
Balance, Shares at Dec. 31, 2012		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
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
Exercise of stock options	666	666
Exercise of stock options, Shares	393,128	327,050
Share-based compensation, including issuance of restricted stock	982	982
Share-based compensation, including issuance of restricted stock, Shares		145,845
Net income (loss)	2,345			2,345
Foreign currency translation adjustment, net of tax	(86)		(86)
Change in unrealized gains on investments, net of tax	(1)		(1)
Balance at Dec. 31, 2014	$ 28,577	$ 131,071	$ (846)	$ (101,648)
Balance, Shares at Dec. 31, 2014	11,767,577	11,767,577