Earnings Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Basic Loss
Net loss	$ (3,549)	$ (3,800)	$ (2,893)	$ (4,546)
Weighted average shares outstanding	19,017	18,838	18,968	18,798
Basic loss per common share	$ (0.19)	$ (0.20)	$ (0.15)	$ (0.24)
Diluted Loss
Net loss	$ (3,549)	$ (3,800)	$ (2,893)	$ (4,546)
Weighted average common shares and potential dilutive shares	19,017	18,838	18,968	18,798
Effect of dilutive securities
Weighted average common shares and potential dilutive shares	19,017	18,838	18,968	18,798
Diluted loss per common share	$ (0.19)	$ (0.20)	$ (0.15)	$ (0.24)
Stock options [Member]
Effect of dilutive securities
Effect of dilutive securities
Anti-dilutive options (excluded from diluted net loss per share computations)	489	705	363	448
Restricted stock [Member]
Effect of dilutive securities
Effect of dilutive securities