Condensed Financial Information (Parent Company Only) - Condensed Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Provision for income taxes	$ 61,306	$ 64,890	$ 64,265
NET INCOME	271,156	254,904	238,167
Preferred stock dividends	47	52	339
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	271,109	254,852	237,828
Parent Company
Income Statement [Abstract]
Dividends from subsidiaries	227,310	311,253	67,893
Other income	1,080	762	13,658
Income	228,390	312,015	81,551
EXPENSE	44,847	37,204	40,594
Income before income taxes and equity in undistributed net income of subsidiaries	183,543	274,811	40,957
Provision for income taxes	(11,314)	(9,438)	(5,680)
Income before equity in undistributed net income of subsidiaries	194,857	284,249	46,637
Equity in undistributed net income of subsidiaries	76,299	(29,345)	191,530
NET INCOME	271,156	254,904	238,167
Preferred stock dividends	47	52	339
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 271,109	$ 254,852	$ 237,828