Earnings per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Basic earnings per common share
Net income	$ 603	$ 2,346	$ 3,108	$ 7,051
Less income allocated to participating securities	9	19	45	51
Net income attributable to common shareholders	594	2,327	3,063	7,000
Weighted average common shares outstanding	22,053,555	21,922,173	22,021,226	21,885,301
Basic income per common share (in dollars per share)	$ 0.03	$ 0.11	$ 0.14	$ 0.32
Earnings per common share assuming dilution
Net income	603	2,346	3,108	7,051
Less income allocated to participating securities	9	19	45	51
Net income attributable to common shareholders	$ 594	$ 2,327	$ 3,063	$ 7,000
Weighted average common shares outstanding	22,053,555	21,922,173	22,021,226	21,885,301
Incremental shares applicable to stock based compensation	26,482	56,842	40,487	73,172
Weighted average common shares assuming dilution	22,080,037	21,979,015	22,061,713	21,958,473
Earnings per common share assuming dilution (in dollars per share)	$ 0.02	$ 0.10	$ 0.13	$ 0.31