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Allowance for Credit Losses - Allowance and Loans by Impairment Methodology (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Allowance balance attributable to loans:
Individually evaluated for impairment		$ 51
Collectively evaluated for impairment		40,467
Total allowance	$ 40,248	40,518	$ 40,880	$ 40,157
Loans:
Individually evaluated for impairment		823
Collectively evaluated for impairment		1,633,440
Acquired loans - PCI		1,455
Total Loans		1,635,718
Residential mortgage
Allowance balance attributable to loans:
Individually evaluated for impairment		51
Collectively evaluated for impairment		2,571
Total allowance		2,622	2,670	2,660
Loans:
Individually evaluated for impairment		797
Collectively evaluated for impairment		265,170
Acquired loans - PCI		300
Total Loans		266,267
Real Estate Construction
Allowance balance attributable to loans:
Collectively evaluated for impairment		788
Total allowance		788	794	856
Loans:
Collectively evaluated for impairment		59,675
Total Loans		59,675
Commercial, Financial & Agricultural
Allowance balance attributable to loans:
Collectively evaluated for impairment		10,431
Total allowance		10,431	10,464	11,085
Loans:
Collectively evaluated for impairment		781,867
Acquired loans - PCI		1,114
Total Loans		782,981
Equity lines
Allowance balance attributable to loans:
Collectively evaluated for impairment		497
Total allowance		497	535	593
Loans:
Individually evaluated for impairment		26
Collectively evaluated for impairment		43,259
Acquired loans - PCI		15
Total Loans		43,300
Consumer
Allowance balance attributable to loans:
Collectively evaluated for impairment		211
Total allowance		211	155	172
Loans:
Collectively evaluated for impairment		8,912
Acquired loans - PCI		26
Total Loans		8,938
Consumer finance
Allowance balance attributable to loans:
Collectively evaluated for impairment		25,969
Total allowance	$ 24,389	25,969	$ 26,262	$ 24,791
Loans:
Collectively evaluated for impairment		474,557
Total Loans		$ 474,557

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The balance of financing receivables that were acquired loans.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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-Section 50
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-Topic 310
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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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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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