Fair Value Disclosures - Assets, Liabilities and Off-balance Sheet Items Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Assets:
Held-to-maturity securities	$ 133,147	$ 134,068
Total assets	0		$ 13
Deposits:
Time Deposits	646,327	519,084
Subordinated notes	148,385	148,260
Estimate of Fair Value Measurement [Member]
Assets:
Cash and short-term interest-earning assets	138,324	152,799
Held-to-maturity securities	133,147	134,068
Net loans and leases held for investment	6,097,345	5,912,050
Servicing rights	16,827	16,826
Total assets	6,385,643	6,215,743
Deposits:
Demand and savings deposits, non-maturity	5,188,330	5,394,442
Time Deposits	637,072	503,576
Total deposits	5,825,402	5,898,018
Short-term borrowings	271,881	197,141
Long-term debt	220,903	91,926
Subordinated notes	141,250	147,250
Total liabilities	6,459,436	6,334,335
Estimate of Fair Value Measurement [Member] | Level 1 [Member]
Assets:
Cash and short-term interest-earning assets	138,324	152,799
Held-to-maturity securities	0	0
Net loans and leases held for investment	0	0
Servicing rights	0	0
Total assets	138,324	152,799
Deposits:
Demand and savings deposits, non-maturity	5,188,330	5,394,442
Time Deposits	0	0
Total deposits	5,188,330	5,394,442
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated notes	0	0
Total liabilities	5,188,330	5,394,442
Estimate of Fair Value Measurement [Member] | Level 2 [Member]
Assets:
Cash and short-term interest-earning assets	0	0
Held-to-maturity securities	133,147	134,068
Net loans and leases held for investment	0	0
Servicing rights	0	0
Total assets	133,147	134,068
Deposits:
Demand and savings deposits, non-maturity	0	0
Time Deposits	637,072	503,576
Total deposits	637,072	503,576
Short-term borrowings	271,881	197,141
Long-term debt	220,903	91,926
Subordinated notes	141,250	147,250
Total liabilities	1,271,106	939,893
Estimate of Fair Value Measurement [Member] | Level 3 [Member]
Assets:
Cash and short-term interest-earning assets	0	0
Held-to-maturity securities	0	0
Net loans and leases held for investment	6,097,345	5,912,050
Servicing rights	16,827	16,826
Total assets	6,114,172	5,928,876
Deposits:
Demand and savings deposits, non-maturity	0	0
Time Deposits	0	0
Total deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Subordinated notes	0	0
Total liabilities	0	0
Carrying Amount [Member]
Assets:
Cash and short-term interest-earning assets	138,324	152,799
Held-to-maturity securities	151,347	154,727
Federal Home Loan Bank, Federal Reserve Bank and other stock	43,792	33,841
Net loans and leases held for investment	6,149,381	6,033,640
Servicing rights	8,460	8,572
Total assets	6,491,304	6,383,579
Deposits:
Demand and savings deposits, non-maturity	5,188,330	5,394,442
Time Deposits	646,327	519,084
Total deposits	5,834,657	5,913,526
Short-term borrowings	271,881	197,141
Long-term debt	220,000	95,000
Subordinated notes	148,385	148,260
Total liabilities	$ 6,474,923	$ 6,353,927