Allowance for Loan Losses - Roll Forward Of the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Allowance for loan losses:
Beginning balance	$ 49,026	$ 46,211
Charge-offs	(1,537)	(2,065)
Recoveries	846	505
Net (charge-offs) recoveries	(691)	(1,560)
Provision for loan losses charged to operations	1,500	1,750
Ending balance	49,835	46,401
Individually evaluated for impairment	2,213	1,472
Collectively evaluated for impairment	45,098	43,112
Receivables Acquired with Deteriorated Credit Quality
Allowance for loan losses:
Ending balance	2,524	1,817
Commercial, financial, agricultural
Allowance for loan losses:
Beginning balance	8,269	5,542
Charge-offs	(258)	(659)
Recoveries	374	235
Net (charge-offs) recoveries	116	(424)
Provision for loan losses charged to operations	1,237	1,953
Ending balance	9,622	7,071
Individually evaluated for impairment	1,181	272
Collectively evaluated for impairment	8,312	6,494
Commercial, financial, agricultural \| Receivables Acquired with Deteriorated Credit Quality
Allowance for loan losses:
Ending balance	129	305
Real estate – construction
Allowance for loan losses:
Beginning balance	4,755	3,428
Charge-offs	0	0
Recoveries	7	4
Net (charge-offs) recoveries	7	4
Provision for loan losses charged to operations	16	766
Ending balance	4,778	4,198
Individually evaluated for impairment	58	1
Collectively evaluated for impairment	4,720	4,197
Real estate – construction \| Receivables Acquired with Deteriorated Credit Quality
Allowance for loan losses:
Ending balance	0	0
Real estate – 1-4 family mortgage
Allowance for loan losses:
Beginning balance	10,139	12,009
Charge-offs	(497)	(671)
Recoveries	197	133
Net (charge-offs) recoveries	(300)	(538)
Provision for loan losses charged to operations	(348)	(67)
Ending balance	9,491	11,404
Individually evaluated for impairment	127	168
Collectively evaluated for impairment	8,944	10,750
Real estate – 1-4 family mortgage \| Receivables Acquired with Deteriorated Credit Quality
Allowance for loan losses:
Ending balance	420	486
Real estate – commercial mortgage
Allowance for loan losses:
Beginning balance	24,492	23,384
Charge-offs	(562)	(613)
Recoveries	245	108
Net (charge-offs) recoveries	(317)	(505)
Provision for loan losses charged to operations	468	(965)
Ending balance	24,643	21,914
Individually evaluated for impairment	842	1,026
Collectively evaluated for impairment	21,828	19,865
Real estate – commercial mortgage \| Receivables Acquired with Deteriorated Credit Quality
Allowance for loan losses:
Ending balance	1,973	1,023
Installment loans to individuals
Allowance for loan losses:
Beginning balance	1,371	1,848
Charge-offs	(220)	(122)
Recoveries	23	25
Net (charge-offs) recoveries	(197)	(97)
Provision for loan losses charged to operations	127	63
Ending balance	1,301	1,814
Individually evaluated for impairment	5	5
Collectively evaluated for impairment	1,294	1,806
Installment loans to individuals \| Receivables Acquired with Deteriorated Credit Quality
Allowance for loan losses:
Ending balance	$ 2	$ 3

Financing Receivable, Allowance for Credit Losses, Net Recoveries (Write-downs)

No definition available.

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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-Publisher FASB
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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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-Publisher FASB
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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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-Publisher FASB
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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Amount of direct write-downs of financing receivables charged against the allowance.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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