Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator [Abstract]
Net income	$ 6,579	$ 14,939
Basic earnings per share [Abstract]
Weighted average shares (in shares)	17,752,000	17,712,000
Diluted earnings per share [Abstract]
Effect of dilutive stock options and restricted stock grants (in shares)	11,000	11,000
Adjusted weighted average shares (in shares)	17,763,000	17,723,000
Earnings per share [Abstract]
Basic earnings per share (in dollars per share)	$ 0.37	$ 0.84
Diluted earnings per share (in dollars per share)	$ 0.37	$ 0.84
Options [Member]
Earnings Per Share [Abstract]
Options excluded from diluted calculations (in shares)	20,000	0
Options excluded from diluted calculations, weighted average price (in dollars per share)	$ 32.27