Deposits - Summary of Deposit Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Interest and Noninterest Bearing Domestic Deposit Liabilities To Deposit Liabilities [Abstract]
Noninterest-bearing demand	$ 1,866,252	$ 2,113,289
Interest-bearing checking	2,952,280	3,079,249
Money market	1,031,310	1,192,353
Savings	791,594	974,403
Certificates of deposit $250 thousand and under	1,330,090	901,505
Certificates of deposit over $250 thousand	473,155	306,672
Deposits	$ 8,444,681	$ 8,567,471
Percentage Of Interest and Noninterest Bearing Domestic Deposit Liabilities To Deposit Liabilities [Abstract]
Noninterest-bearing demand	22.10%	24.70%
Interest-bearing checking	35.00%	35.90%
Money market	12.20%	13.90%
Savings	9.40%	11.40%
Certificates of deposit $250 thousand and under	15.70%	10.50%
Certificates of deposit over $250 thousand	5.60%	3.60%
Total deposits	100.00%	100.00%