Deposits - Schedule of Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statistical Disclosure for Banks [Abstract]
Demand deposits	$ 7,704,190	$ 6,821,152
Savings deposits	4,334,802	3,661,713
Certificates and other time deposits of $100,000 or more	273,379	346,194
Other certificates and time deposits	389,752	459,168
Brokered deposits	30,454	73,383
Total deposits	$ 12,732,577	$ 11,361,610