Earnings Per Share - Calculation 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 [Abstract]
Net income	$ 373,012	$ 373,357	$ 386,164
Income attributable to unvested participating securities, basic EPS	(1,684)	(1,533)	(1,671)
Net income used in calculating basic EPS	$ 371,328	$ 371,824	$ 384,493
Weighted-average vested shares	37,997	39,530	40,065
Basic EPS	$ 9.77	$ 9.41	$ 9.60
Income attributable to unvested participating securities, diluted EPS	$ (1,680)	$ (1,529)	$ (1,667)
Net income used in calculating diluted EPS	$ 371,332	$ 371,828	$ 384,497
Dilutive effect of incremental shares to be issued for contingently-issuable shares	109	122	120
Weighted-average shares used in calculating diluted EPS	38,106	39,652	40,185
Diluted EPS	$ 9.74	$ 9.38	$ 9.57