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Fair Value Measurements - Estimated Fair Value of Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financial Assets:
Securities - held-to-maturity	$ 267,099	$ 261,692
FHLB and other stock	19,326	17,720
Financial Liabilities:
Time deposits	725,338	631,411
Fed funds purchased and securities sold under agreements to repurchase	63,491	56,278
Other borrowings	327,000	291,300
(Level 1)
Financial Assets:
Cash and cash equivalents	70,537	77,837
Securities - held-to-maturity	0	0
FHLB and other stock	0	0
Accrued interest receivable	0	0
Loans/leases, net	0	0
Financial Liabilities:
Time deposits	0	0
Other deposits	0	0
Fed funds purchased and securities sold under agreements to repurchase	0	0
Other borrowings	0	0
Accrued interest payable	0	0
(Level 2)
Financial Assets:
Cash and cash equivalents	0	0
Securities - held-to-maturity	267,099	261,692
FHLB and other stock	19,326	17,720
Accrued interest receivable	23,629	24,865
Loans/leases, net	0	0
Financial Liabilities:
Time deposits	713,125	616,488
Other deposits	5,783,671	5,970,884
Fed funds purchased and securities sold under agreements to repurchase	63,491	56,278
Other borrowings	324,849	289,234
Accrued interest payable	1,579	1,420
(Level 3)
Financial Assets:
Cash and cash equivalents	0	0
Securities - held-to-maturity	0	0
FHLB and other stock	0	0
Accrued interest receivable	0	0
Loans/leases, net	4,911,105	4,939,246
Financial Liabilities:
Time deposits	0	0
Other deposits	0	0
Fed funds purchased and securities sold under agreements to repurchase	0	0
Other borrowings	0	0
Accrued interest payable	0	0
Carrying Amount
Financial Assets:
Cash and cash equivalents	70,537	77,837
Securities - held-to-maturity	312,357	312,344
FHLB and other stock	19,326	17,720
Accrued interest receivable	23,629	24,865
Loans/leases, net	5,227,572	5,222,977
Financial Liabilities:
Time deposits	725,338	631,411
Other deposits	5,783,671	5,970,884
Fed funds purchased and securities sold under agreements to repurchase	63,491	56,278
Other borrowings	327,000	291,300
Accrued interest payable	1,579	1,420
Fair Value
Financial Assets:
Cash and cash equivalents	70,537	77,837
Securities - held-to-maturity	267,099	261,692
FHLB and other stock	19,326	17,720
Accrued interest receivable	23,629	24,865
Loans/leases, net	4,911,105	4,939,246
Financial Liabilities:
Time deposits	713,125	616,488
Other deposits	5,783,671	5,970,884
Fed funds purchased and securities sold under agreements to repurchase	63,491	56,278
Other borrowings	324,849	289,234
Accrued interest payable	$ 1,579	$ 1,420

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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