Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Basic:
Net income	$ 5,439	$ 7,684	$ 12,984	$ 15,847
Weighted-average common shares outstanding	14,349,040	14,434,232	14,385,927	14,444,821
Basic earnings per share	$ 0.38	$ 0.53	$ 0.90	$ 1.10
Diluted:
Net Income	$ 5,439	$ 7,684	$ 12,984	$ 15,847
Weighted-average common shares outstanding	14,349,040	14,434,232	14,385,927	14,444,821
Effect of dilutive restricted stock and stock appreciation rights	196,159	258,032	201,930	255,613
Weighted-average common shares outstanding assuming dilution	14,545,199	14,692,264	14,587,857	14,700,434
Diluted earnings per share	$ 0.37	$ 0.52	$ 0.89	$ 1.08