Deposits Summary (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deposits [Abstract]
Demand and other noninterest-bearing	$ 8,373,350	$ 8,856,714
Money market	2,972,838	3,525,299
Interest-bearing demand	1,980,631	1,999,407
Savings	1,555,765	1,617,546
Interest-bearing public funds, other than certificates of deposit	670,580	779,146
Certificates of deposit, less than $250,000	215,848	249,120
Certificates of deposit, $250,000 or more	124,411	160,490
Certificates of deposit insured by CDARS®	21,828	35,611
Reciprocal money market accounts	796,199	786,046
Subtotal	16,711,450	18,009,379
Deposits, Valuation Adjustment From Acquisition Accounting	0	736
Total deposits	$ 16,711,450	$ 18,010,115