Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income available to common shareholders	$ 43,727	$ 49,263	$ 146,717	$ 139,938
Weighted average common shares outstanding (in shares)	37,405,000	37,241,000	37,353,000	37,422,000
Additional dilutive common stock equivalents (in shares)	115,000	106,000	140,000	96,000
Weighted average diluted common shares outstanding (in shares)	37,520,000	37,347,000	37,493,000	37,518,000
Basic earnings per common share (in dollars per share)	$ 1.17	$ 1.32	$ 3.93	$ 3.74
Diluted earnings per common share (in dollars per share)	$ 1.17	$ 1.32	$ 3.91	$ 3.73
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	440,000	218,000	430,000	218,000