Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Preferred Stock	Common Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance at Dec. 31, 2010	$ 25,082		$ 124,716	$ (445)	$ (99,189)
Balance, Shares at Dec. 31, 2010			10,415,541
Exercise of stock options	424		424
Exercise of stock options, Shares	208,821		208,821
Share-based compensation, including issuance of restricted stock	2,178		2,178
Share-based compensation, including issuance of restricted stock, Shares			249,688
Comprehensive income (loss):
Net loss	(463)				(463)
Foreign currency translation adjustment, net of tax	(171)			(171)
Change in unrealized gain on investments, net of tax	(15)			(15)
Balance at Dec. 31, 2011	27,035		127,318	(631)	(99,652)
Balance, shares at Dec. 31, 2011	10,874,050		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 loss	916				916
Foreign currency translation adjustment, net of tax	(114)			(114)
Change in unrealized gain 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