Parent Company only Condensed Financial Information - Balance Sheets (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 306,603,000	$ 1,306,216,000
Total assets	5,157,580,000	5,499,409,000	$ 4,634,114,000
Liabilities and Shareholders' Equity
Subordinated debt, net of issuance costs	39,350,000	39,925,000
Shareholder's equity	632,456,000	598,028,000	$ 577,889,000	$ 576,708,000
Total liabilities and shareholders' equity	5,157,580,000	5,499,409,000
Parent Company
Assets
Cash and cash equivalents	20,974,000	19,487,000
Investment in subsidiary bank	649,545,000	616,108,000
Other assets	1,549,000	2,685,000
Total assets	672,068,000	638,280,000
Liabilities and Shareholders' Equity
Subordinated debt, net of issuance costs	39,350,000	39,925,000
Other liabilities	262,000	327,000
Shareholder's equity	632,456,000	598,028,000
Total liabilities and shareholders' equity	$ 672,068,000	$ 638,280,000