Net Income Per Common Share (Schedule of Basic and Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Basic Net Income Per Common Share:
Net income available to common shareholders	$ 162,746	$ 178,802
Weighted average common shares outstanding (in shares)	145,273	148,467
Net income per common share, basic (in dollars per share)	$ 1.12	$ 1.20
Diluted Net Income Per Common Share:
Net income available to common shareholders	$ 162,746	$ 178,802
Weighted average common shares outstanding (in shares)	145,273	148,467
Effect of dilutive outstanding equity-based awards, warrants, and earnout payments (in shares)	1,392	1,313
Weighted average number of diluted common shares (in shares)	146,665	149,780
Net income per common share, diluted (in dollars per share)	$ 1.11	$ 1.19