Loans - Schedule of Loans (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Loans held for sale	$ 80,387,000	$ 191,512,000
Total	5,231,331,000	5,707,762,000
Loans accounted for at fair value	0	17,011,000
Total LHFI	5,231,331,000	5,724,773,000
Allowance for credit loss	64,586,000	86,670,000	$ 37,520,000	$ 34,203,000
LHFI, net	5,166,745,000	5,638,103,000
Net deferred loan fees	9,600,000	13,700,000
Paycheck Protection Program
Loans and Leases Receivable Disclosure [Line Items]
Total	105,800,000	546,500,000
Net deferred loan fees	3,000,000	9,600,000
Real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	3,133,334,000	2,787,908,000
Total LHFI	3,133,334,000	2,804,919,000
Real estate \| Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	1,693,512,000	1,370,928,000
Loans accounted for at fair value	0	17,000,000
Total LHFI	1,693,512,000	1,387,939,000
Allowance for credit loss	13,425,000	15,430,000	10,013,000	8,999,000
Real estate \| Construction/land/land development
Loans and Leases Receivable Disclosure [Line Items]
Total	530,083,000	531,860,000
Total LHFI	530,083,000	531,860,000
Allowance for credit loss	4,011,000	8,191,000	3,711,000	3,331,000
Real estate \| Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	909,739,000	885,120,000
Total LHFI	909,739,000	885,120,000
Allowance for credit loss	6,116,000	9,418,000	6,332,000	5,705,000
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Total	1,454,235,000	1,817,862,000
Total LHFI	1,454,235,000	1,817,862,000
Allowance for credit loss	40,146,000	51,857,000	16,960,000	15,616,000
Mortgage warehouse lines of credit
Loans and Leases Receivable Disclosure [Line Items]
Total	627,078,000	1,084,001,000
Total LHFI	627,078,000	1,084,001,000
Allowance for credit loss	340,000	856,000	262,000	316,000
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	16,684,000	17,991,000
Total LHFI	16,684,000	17,991,000
Allowance for credit loss	$ 548,000	$ 918,000	$ 242,000	$ 236,000

Financing Receivable Excluding Loans At Fair Value, Before Allowance for Credit Loss

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Amount excluding accrued interest, of allowance for credit loss on financing receivable.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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