Loans - Recorded Investment in Financing Receivable Modified as TDR Within 12 Month (Details) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($) contracts	Dec. 31, 2017 USD ($) contracts	Dec. 31, 2016 USD ($) contracts
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	73	64	97
Recorded Investment \| $	$ 1,319	$ 1,235	$ 3,798
Commercial, financial and agricultural
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	3	0	7
Recorded Investment \| $	$ 104		$ 419
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	2	5
Recorded Investment \| $		$ 82	$ 843
Commercial
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	0	0
Mortgage
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	0	0
Recorded Investment \| $	$ 0
Installment
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	0	0
Recorded Investment \| $	$ 0
Commercial
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	2	7
Recorded Investment \| $		$ 117	$ 848
Mortgage
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	8	6	15
Recorded Investment \| $	$ 518	$ 467	$ 1,201
HELOC
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	2	4	0
Recorded Investment \| $	$ 32	$ 194
Installment
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	1	0	1
Recorded Investment \| $	$ 29		$ 3
Leases
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	59	50	62
Recorded Investment \| $	$ 636	$ 375	$ 484
Leases
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	0	0
Recorded Investment \| $	$ 0

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524

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- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

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