Loans - Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Allowance for Loan Losses:
Beginning Balance	$ 13,837	$ 12,858
Charge-offs	(458)	(240)
Recoveries	53	58
Provision for loan losses	360	160
Ending Balance	13,792	12,836
Commercial, financial, and agricultural
Allowance for Loan Losses:
Beginning Balance	1,680	1,177
Charge-offs	(50)	(33)
Recoveries	6	7
Provision for loan losses	96	221
Ending Balance	1,732	1,372
Real Estate Mortgages \| Residential
Allowance for Loan Losses:
Beginning Balance	5,616	5,679
Charge-offs	(73)	(51)
Recoveries	1	24
Provision for loan losses	186	4
Ending Balance	5,730	5,656
Real Estate Mortgages \| Commercial
Allowance for Loan Losses:
Beginning Balance	4,047	4,277
Charge-offs	(139)	(55)
Recoveries	0	0
Provision for loan losses	(106)	(219)
Ending Balance	3,802	4,003
Real Estate Mortgages \| Construction
Allowance for Loan Losses:
Beginning Balance	143	155
Charge-offs	0	0
Recoveries	5	2
Provision for loan losses	(18)	(1)
Ending Balance	130	156
Consumer automobile loans
Allowance for Loan Losses:
Beginning Balance	1,328	804
Charge-offs	(100)	(30)
Recoveries	26	1
Provision for loan losses	148	241
Ending Balance	1,402	1,016
Other consumer installment loans
Allowance for Loan Losses:
Beginning Balance	259	271
Charge-offs	(96)	(71)
Recoveries	15	24
Provision for loan losses	100	81
Ending Balance	278	305
Unallocated
Allowance for Loan Losses:
Beginning Balance	764	495
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	(46)	(167)
Ending Balance	$ 718	$ 328

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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