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Loans, Allowance for Credit Losses, and Asset Quality Information - Summary of Major Categories of Total Loans Outstanding (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 8,012,741	$ 8,150,280
Unamortized net deferred loan costs/(fees)	797	(178)
Total loans	$ 8,013,538	$ 8,150,102
Financing Receivable | Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	100.00%	100.00%
Total SBA loans included in the table above
Loans and Leases Receivable Disclosure [Line Items]
Total loans	$ 140,603	$ 143,246
Guaranteed portions of SBA loans included in table above
Loans and Leases Receivable Disclosure [Line Items]
Total loans	36,131	35,462
Unguaranteed portions of SBA loans included in table above
Loans and Leases Receivable Disclosure [Line Items]
Total loans	104,472	107,784
Sold portions of SBA loans with servicing retained - not included in tables above
Loans and Leases Receivable Disclosure [Line Items]
Total loans	341,517	349,275
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 847,284	$ 905,862
Commercial and industrial | Financing Receivable | Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	11.00%	11.00%
Real estate, commercial | Construction, development & other land loans
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 760,949	$ 992,980
Real estate, commercial | Construction, development & other land loans | Financing Receivable | Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	9.00%	12.00%
Real estate, commercial | Commercial real estate - owner occupied
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 1,226,050	$ 1,259,022
Real estate, commercial | Commercial real estate - owner occupied | Financing Receivable | Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	15.00%	16.00%
Real estate, commercial | Commercial real estate - non owner occupied
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 2,572,901	$ 2,528,060
Real estate, commercial | Commercial real estate - non owner occupied | Financing Receivable | Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	32.00%	31.00%
Real estate, commercial | Multi-family real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 460,565	$ 421,376
Real estate, commercial | Multi-family real estate | Financing Receivable | Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	6.00%	5.00%
Real estate, mortgage | Residential 1-4 family real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 1,737,133	$ 1,639,469
Real estate, mortgage | Residential 1-4 family real estate | Financing Receivable | Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	22.00%	20.00%
Real estate, mortgage | Home equity loans/lines of credit
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 331,072	$ 335,068
Real estate, mortgage | Home equity loans/lines of credit | Financing Receivable | Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	4.00%	4.00%
Consumer loans
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 76,787	$ 68,443
Consumer loans | Financing Receivable | Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	1.00%	1.00%

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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