Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net income	$ 5,368	$ 5,740
Weighted average common shares outstanding - Basic (in shares)	10,883	10,801
Plus: Potential dilutive common stock equivalents (in shares)	154	154
Weighted average common shares outstanding - Diluted (in shares)	11,037	10,955
Net income per common share - Basic (in dollars per share)	$ 0.49	$ 0.53
Net income per common share - Diluted (in dollars per share)	$ 0.49	$ 0.52
Stock options and common stock excluded from the income per share calculation as their effect would have been anti-dilutive (in shares)	363	209