Loans - Schedule of Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses Individually Evaluated for Impairment	$ 834	$ 1,198
Allowance for Loan Collectively Evaluated for Impairment	8,785	8,438
Total	9,619	9,636	$ 9,716	$ 9,139
Loans Individually Evaluated for Impairment	2,073	2,407
Loans Collectively Evaluated for Impairment	914,111	875,436
Total	916,184	877,843
Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Collectively Evaluated for Impairment	5,196	4,805
Total	5,196	4,805	5,211	4,801
Loans Collectively Evaluated for Impairment	547,048	505,229
Total	547,048	505,229
SBA Loans-Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Collectively Evaluated for Impairment	930	894
Total	930	894	1,006	1,082
Loans Individually Evaluated for Impairment	510	834
Loans Collectively Evaluated for Impairment	120,798	117,159
Total	121,308	117,993
SBA Loans—Non-Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses Individually Evaluated for Impairment		362
Allowance for Loan Collectively Evaluated for Impairment	129	143
Total	129	505	501	538
Loans Individually Evaluated for Impairment	49	57
Loans Collectively Evaluated for Impairment	9,826	9,875
Total	9,875	9,932
Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses Individually Evaluated for Impairment	834	836
Allowance for Loan Collectively Evaluated for Impairment	839	910
Total	1,673	1,746	1,580	1,265
Loans Individually Evaluated for Impairment	1,514	1,516
Loans Collectively Evaluated for Impairment	105,591	112,781
Total	107,105	114,297
Home Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Collectively Evaluated for Impairment	1,660	1,653
Total	1,660	1,653	1,376	1,408
Loans Collectively Evaluated for Impairment	128,381	127,806
Total	128,381	127,806
Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Collectively Evaluated for Impairment	31	33
Total	31	33	$ 42	$ 45
Loans Collectively Evaluated for Impairment	2,467	2,586
Total	$ 2,467	$ 2,586

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

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 (c)(1)
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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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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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The balance of financing receivables that were collectively evaluated for impairment.

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

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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
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