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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
-Name Accounting Standards Codification
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Amount of allowance for credit loss on financing receivable evaluated on collective basis. Excludes financing receivable evaluated on individual basis.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
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Amount of allowance for credit loss on financing receivable evaluated on individual basis. Excludes financing receivable evaluated on collective basis.

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Amount of financing receivable collectively evaluated for credit loss. Excludes financing receivable individually evaluated for credit loss.

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Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Reserve for loan and lease losses.

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Loans and Leases - Allowance for Loan and Lease Losses and Recorded Investment in Loans and Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	$ 456			$ 373
Ending balance: pooled	85,289			82,336
Financing Receivable, Allowance for Credit Loss	85,745	$ 85,632	$ 85,387	82,709	$ 80,034	$ 79,004
Loans and leases held for investment [Abstract]
Ending balance: individually analyzed	15,748			14,894
Ending balance: pooled	6,669,089			6,447,344
Total Loans and Leases Held for Investment	6,684,837		6,567,214	6,462,238
Commercial, financial and agricultural
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	433			373
Ending balance: pooled	14,112			13,498
Financing Receivable, Allowance for Credit Loss	14,545	13,932	13,699	13,871	14,725	16,920
Loans and leases held for investment [Abstract]
Ending balance: individually analyzed	2,237			1,217
Ending balance: pooled	1,053,095			1,038,048
Total Loans and Leases Held for Investment	1,055,332		989,723	1,039,265
Real estate-commercial
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	23			0
Ending balance: pooled	45,955			44,757
Financing Receivable, Allowance for Credit Loss	45,978	45,853	45,849	44,757	43,150	41,673
Loans and leases held for investment [Abstract]
Ending balance: individually analyzed	4,140			4,405
Ending balance: pooled	3,369,749			3,217,588
Total Loans and Leases Held for Investment	3,373,889		3,302,798	3,221,993
Real estate-construction
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0			0
Ending balance: pooled	6,153			5,433
Financing Receivable, Allowance for Credit Loss	6,153	6,254	6,543	5,433	4,681	4,952
Loans and leases held for investment [Abstract]
Ending balance: individually analyzed	3,523			6,202
Ending balance: pooled	309,706			407,202
Total Loans and Leases Held for Investment	313,229		394,462	413,404
Real estate-residential secured for business purpose
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0			0
Ending balance: pooled	7,739			8,696
Financing Receivable, Allowance for Credit Loss	7,739	8,800	8,692	8,696	8,360	7,054
Loans and leases held for investment [Abstract]
Ending balance: individually analyzed	822			1,032
Ending balance: pooled	531,806			516,489
Total Loans and Leases Held for Investment	532,628		517,002	517,521
Residential secured for personal purpose
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0			0
Ending balance: pooled	6,606			5,588
Financing Receivable, Allowance for Credit Loss	6,606	6,637	6,349	5,588	5,012	3,685
Loans and leases held for investment [Abstract]
Ending balance: individually analyzed	3,818			1,154
Ending balance: pooled	948,847			831,478
Total Loans and Leases Held for Investment	952,665		909,015	832,632
Real estate-home equity secured for personal purpose
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0			0
Ending balance: pooled	1,688			1,296
Financing Receivable, Allowance for Credit Loss	1,688	1,184	1,289	1,296	1,271	1,287
Loans and leases held for investment [Abstract]
Ending balance: individually analyzed	1,193			884
Ending balance: pooled	177,957			174,206
Total Loans and Leases Held for Investment	179,150		179,282	175,090
Loans to individuals
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0			0
Ending balance: pooled	348			560
Financing Receivable, Allowance for Credit Loss	348	388	392	560	375	351
Loans and leases held for investment [Abstract]
Ending balance: individually analyzed	15			0
Ending balance: pooled	26,415			25,544
Total Loans and Leases Held for Investment	26,430		27,749	25,544
Lease financings
Allowance For Credit Losses, Loans And Leases [Abstract]
Ending balance: individually analyzed	0			0
Ending balance: pooled	2,688			2,508
Financing Receivable, Allowance for Credit Loss	2,688	$ 2,584	2,574	2,508	$ 2,460	$ 3,082
Loans and leases held for investment [Abstract]
Ending balance: individually analyzed	0			0
Ending balance: pooled	251,514			236,789
Total Loans and Leases Held for Investment	$ 251,514		$ 247,183	$ 236,789