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Loans and Allowance for Credit Losses - Loan Portfolio by Impairment Methodology (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	$ 920,056	$ 917,103
Ending balance: individually evaluated for impairment	4,683	5,909
Ending balance: collectively evaluated for impairment	915,373	911,194
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	107,960	109,531
Ending balance: individually evaluated for impairment	314	348
Ending balance: collectively evaluated for impairment	107,646	109,183
Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	699,745	699,576
Ending balance: individually evaluated for impairment	3,217	4,215
Ending balance: collectively evaluated for impairment	696,528	695,361
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	112,351	107,996
Ending balance: individually evaluated for impairment	1,152	1,346
Ending balance: collectively evaluated for impairment	$ 111,199	$ 106,650

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The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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