Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Balance sheet assets:
Investment securities	$ 774,610	$ 673,453
Carrying Amount
Balance sheet assets:
Cash and cash equivalents	191,449	514,928
Investment securities	774,610	673,453
Loans, net	964,796	948,526
Accrued interest receivable	7,302	6,799
Total	1,938,157	2,143,706
Balance sheet liabilities:
Deposits	1,176,935	1,221,503
Accounts and drafts payable	989,733	1,050,396
Accrued interest payable	22	16
Total	2,166,690	2,271,915
Fair Value
Balance sheet assets:
Cash and cash equivalents	191,449	514,928
Investment securities	774,610	673,453
Loans, net	961,547	948,701
Accrued interest receivable	7,302	6,799
Total	1,934,908	2,143,881
Balance sheet liabilities:
Deposits	1,176,935	1,221,503
Accounts and drafts payable	989,733	1,050,396
Accrued interest payable	22	16
Total	$ 2,166,690	$ 2,271,915