Per Share Data (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basic Earnings per Share:
Net Income	$ 84,137	$ 62,210	$ 59,222
Weighted Average Shares Outstanding (in shares)	26,537,311	26,539,024	25,824,538
Basic Earnings per Share (in USD per share)	$ 3.17	$ 2.34	$ 2.29
Diluted Earnings per Share:
Net Income	$ 84,137	$ 62,210	$ 59,222
Weighted Average Shares Outstanding (in shares)	26,537,311	26,539,024	25,824,538
Stock Options, Net (in shares)	0	0	0
Diluted Weighted Average Shares Outstanding (in shares)	26,537,311	26,539,024	25,824,538
Diluted Earnings per Share (in USD per share)	$ 3.17	$ 2.34	$ 2.29
Antidilutive securities excluded from computation of earnings per share (in shares)	0	0	0
Stock options outstanding (in shares)	0	0	0