Earnings per Share/Capital Stock - Schedule of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic:
Net income	$ 31,565	$ 38,521	$ 34,407	$ 25,654	$ 19,951	$ 14,162	$ 104,493	$ 59,767
Less: Distributed earnings to common shareholders	15,900			14,690			45,294	41,664
Less: Distributed earnings to participating securities	46			38			124	104
Undistributed earnings	15,619			10,926			59,075	17,999
Undistributed earnings allocated to common shareholders	15,574			10,897			58,913	17,955
Undistributed earnings allocated to participating securities	45			29			162	44
Common shareholders earnings, basic	$ 31,474			$ 25,587			$ 104,207	$ 59,619
Weighted average Common Shares outstanding, basic (in shares)	36,977			36,958			36,974	36,953
Basic earnings per Common Share (in dollars per share)	$ 0.85			$ 0.69			$ 2.82	$ 1.61
Diluted:
Common shareholders earnings, basic	$ 31,474			$ 25,587			$ 104,207	$ 59,619
Undistributed earnings for dilutive stock-based awards	45			29			162	44
Total common shareholders earnings, diluted	$ 31,519			$ 25,616			$ 104,369	$ 59,663
Weighted average Common Shares outstanding, basic (in shares)	36,977			36,958			36,974	36,953
Stock-based compensation (in shares)	94			84			90	81
Weighted Average Number of Diluted Shares (in shares)	37,071			37,042			37,064	37,034
Diluted earnings per Common Share (in dollars per share)	$ 0.85			$ 0.69			$ 2.82	$ 1.61