Net Income per Common Share (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income	$ 2,120,000	$ 1,681,000
Weighted average common shares outstanding — basic	7,415,000	7,131,000
Effect of dilutive securities	$ 53,000	$ 255,000
Weighted average common and potentially issuable common shares outstanding — diluted	7,468,000	7,386,000
Basic net income per common share	$ 0.29	$ 0.24
Diluted net income per common share	$ 0.28	$ 0.23
Antidilutive securities excluded from computation of earnings per share, amount	0	0