Loans - Impaired Financing Receivables, Excluding PCI Loans and Valuation Allowances (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Recorded Investment
Total	$ 35,402	$ 36,700
Unpaid Principal Balance
Total	45,857	46,545
Related Valuation Allowance	2,370	2,728
Construction and land development
Recorded Investment
Impaired Loans with No Related Allowance Recorded	15	15
Impaired Loans with an Allowance Recorded	183	196
Total	198	211
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	221	229
Impaired Loans with an Allowance Recorded	197	211
Total	418	440
Related Valuation Allowance	20	22
Commercial real estate
Recorded Investment
Impaired Loans with No Related Allowance Recorded	5,136	3,852
Impaired Loans with an Allowance Recorded	9,624	9,786
Total	14,760	13,638
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	6,406	5,138
Impaired Loans with an Allowance Recorded	12,791	12,967
Total	19,197	18,105
Related Valuation Allowance	353	369
Residential real estate
Recorded Investment
Impaired Loans with No Related Allowance Recorded	10,294	13,510
Impaired Loans with an Allowance Recorded	5,688	5,537
Total	15,982	19,047
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	14,873	18,111
Impaired Loans with an Allowance Recorded	5,820	5,664
Total	20,693	23,775
Related Valuation Allowance	577	805
Commercial and financial
Recorded Investment
Impaired Loans with No Related Allowance Recorded	2,036	1,191
Impaired Loans with an Allowance Recorded	2,024	2,131
Total	4,060	3,322
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	3,103	1,414
Impaired Loans with an Allowance Recorded	2,020	2,309
Total	5,123	3,723
Related Valuation Allowance	1,329	1,498
Consumer
Recorded Investment
Impaired Loans with No Related Allowance Recorded	146	280
Impaired Loans with an Allowance Recorded	256	202
Total	402	482
Unpaid Principal Balance
Impaired Loans with No Related Allowance Recorded	158	291
Impaired Loans with an Allowance Recorded	268	211
Total	426	502
Related Valuation Allowance	$ 91	$ 34

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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