Deposits - Composition of Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statistical Disclosure for Banks [Abstract]
Noninterest-bearing demand deposit accounts	$ 1,566,113	$ 1,054,458
Interest-bearing deposit accounts:
Interest-bearing demand accounts	187,712	164,870
Savings accounts and money market accounts	2,757,882	2,472,965
NOW accounts	19,496	95,297
Certificate of deposit accounts:
Less than $100	147,386	164,491
$100 through $250	103,082	113,006
Greater than $250	73,277	88,462
Total interest-bearing deposit accounts	3,288,835	3,099,091
Total deposits	$ 4,854,948	$ 4,153,549