Net Income per Common Share (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net income	$ 2,428,000	$ 1,960,000	$ 7,068,000	$ 5,230,000
Weighted average common shares outstanding — basic	7,540,000	7,257,000	7,492,000	7,186,000
Effect of dilutive securities	$ 36,000	$ 161,000	$ 50,000	$ 225,000
Weighted average common and potentially issuable common shares outstanding — diluted	7,576,000	7,418,000	7,542,000	7,411,000
Basic net income per common share (USD per share)	$ 0.32	$ 0.27	$ 0.94	$ 0.73
Diluted net income per common share (USD per share)	$ 0.32	$ 0.26	$ 0.94	$ 0.71