Earnings Per Common Share (Schedule of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 250,178	$ 202,820	$ 154,244
Earnings allocated to participating securities - nonvested restricted shares	50	330	712
Basic earnings allocated to common shareholders	$ 250,128	$ 202,490	$ 153,532
Weighted average common shares outstanding	78,047	72,683	70,835
Basic earnings per common share	$ 3.20	$ 2.79	$ 2.17
Weighted average number of common shares outstanding	78,047	72,683	70,835
Earnings allocated to common shareholders, Diluted	$ 250,128	$ 202,490	$ 153,532
Dilutive effect of equity awards and warrants	146	190	45
Weighted average diluted common shares outstanding	78,193	72,873	70,880
Diluted earnings per common share	$ 3.20	$ 2.78	$ 2.17
Potentially dilutive share options that were not included in the computation of diluted EPS because to do so would be anti-dilutive.	179	212	289