Earnings Per Common Share - Reconciliation of Weighted Average Number of Common Shares Used in the Calculation of Basic and Diluted Earnings Per Common Share and Antidilutive Stock Options and Restricted Stock Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net Income Available to Common Shareholders	$ 163,325	$ 217,927	$ 250,397
Denominator:
Weighted Average Common Shares Outstanding - Basic	39,274,291	39,601,089	39,837,798
Dilutive Effect of Equity Based Awards (in shares)	154,621	186,913	215,866
Weighted Average Common Shares Outstanding - Diluted	39,428,912	39,788,002	40,053,664
Earnings Per Common Share:
Basic	$ 4.16	$ 5.50	$ 6.29
Diluted	$ 4.14	$ 5.48	$ 6.25
Antidilutive Stock Options and Restricted Stock Outstanding (in shares)	199,217	0	41,802