Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Basic and Diluted Earnings Per Share
Net income available to common stockholders, basic									$ 303,202	$ 284,757	$ 266,400
Net income available to common stockholders, diluted									$ 303,202	$ 284,757	$ 266,400
Average outstanding shares - basic (in shares)									110,757,473	99,313,255	94,883,864
Add: dilutive restricted stock units and stock options (in shares)									70,460	84,995	48,489
Average outstanding shares - diluted (in shares)									110,827,933	99,398,250	94,932,353
Basic earnings per share (in dollars per share)	$ 0.72	$ 0.72	$ 0.69	$ 0.61	$ 0.46	$ 0.79	$ 0.81	$ 0.85	$ 2.74	$ 2.87	$ 2.81
Diluted earnings per share (in dollars per share)	$ 0.72	$ 0.72	$ 0.69	$ 0.61	$ 0.46	$ 0.79	$ 0.81	$ 0.85	$ 2.74	$ 2.86	$ 2.81
Restricted stock units and stock options excluded from the diluted average outstanding share calculation (in shares)									8,642	194	88,240