Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator [Abstract]
Net income	$ 20,271	$ 23,931	$ 39,999	$ 47,549
Basic earnings per share [Abstract]
Weighted average shares (in shares)	17,835,000	17,784,000	17,827,000	17,779,000
Diluted earnings per share [Abstract]
Effect of dilutive stock options and restricted stock grants (in shares)	8,000	16,000	11,000	15,000
Adjusted weighted average shares (in shares)	17,843,000	17,800,000	17,838,000	17,794,000
Earnings per share [Abstract]
Basic earnings per share (in dollars per share)	$ 1.14	$ 1.35	$ 2.24	$ 2.67
Diluted earnings per share (in dollars per share)	$ 1.14	$ 1.34	$ 2.24	$ 2.67
Options [Member]
Earnings Per Share [Abstract]
Options excluded from diluted calculations (in shares)	0	0	0	0