Consolidated Statements Of Shareholders' Equity (USD $) In Thousands, except Share data	Common Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Total
Balance at Dec. 31, 2010	$ 99,658	$ 4,838	$ (10,901)	$ 5,252	$ 98,847
Balance, shares at Dec. 31, 2010	16,300,041
Shares issued upon exercise of employee stock options	85	(5)			80
Shares issued upon exercise of employee stock options, shares	30,000
Net loss			(224)		(224)
Other comprehensive income				1,020	1,020
Share-based compensation		142			142
Balance at Mar. 31, 2011	99,743	4,975	(11,125)	6,272	99,865
Balance, shares at Mar. 31, 2011	16,330,041
Balance at Dec. 31, 2011	99,746	5,334	(24,914)	4,807	84,973
Balance, shares at Dec. 31, 2011	16,331,241
Shares issued upon exercise of employee stock options	208	(57)			151
Shares issued upon exercise of employee stock options, shares	68,000
Net loss			(5,816)		(5,816)
Other comprehensive income				65	65
Share-based compensation		127			127
Balance at Mar. 31, 2012	$ 99,954	$ 5,404	$ (30,730)	$ 4,872	$ 79,500
Balance, shares at Mar. 31, 2012	16,399,241