Net Income per Share (Reconciliation of Calculation of Basic and Diluted Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net Income per Share [Abstract]
Net income	$ 4,205	$ 1,939
Weighted average common shares outstanding - Basic	8,459	8,417
Plus: Potential dilutive common stock equivalents	223	97
Weighted average common shares outstanding - Diluted	8,682	8,514
Net income per common share - Basic	$ 0.50	$ 0.23
Net income per common share - Diluted	$ 0.48	$ 0.23
Stock options and common stock excluded from the income per share calculation as their effect would have been anti-dilutive	185	113