Allowance for Loan and Lease Losses - Changes in Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 9,689	$ 11,708
Charge-offs	(1,300)	(2,535)
Recoveries	789	1,264
(Credit) provision	1,242	(748)
Ending balance	10,420	9,689
Ending balance: related to loans individually evaluated for impairment	368	398
Ending balance: related to loans collectively evaluated for impairment	10,052	9,291
LHFI [Abstract]
Ending balance	602,009	499,103
Ending balance: individually evaluated for impairment	6,955	7,191
Ending balance: collectively evaluated for impairment	595,054	491,912
Commercial real estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,622	4,452
Charge-offs	(84)	(622)
Recoveries	201	380
(Credit) provision	(444)	(588)
Ending balance	3,295	3,622
Ending balance: related to loans individually evaluated for impairment	3	77
Ending balance: related to loans collectively evaluated for impairment	3,292	3,545
LHFI [Abstract]
Ending balance	261,561	225,679
Ending balance: individually evaluated for impairment	904	1,469
Ending balance: collectively evaluated for impairment	260,657	224,210
Construction and land development [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,674	2,292
Charge-offs		(264)
Recoveries	306	503
(Credit) provision	314	(857)
Ending balance	2,294	1,674
Ending balance: related to loans collectively evaluated for impairment	2,294	1,674
LHFI [Abstract]
Ending balance	83,369	47,984
Ending balance: individually evaluated for impairment	144	145
Ending balance: collectively evaluated for impairment	83,225	47,839
Commercial and industrial [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,513	1,780
Charge-offs	(107)	(566)
Recoveries	174	282
(Credit) provision	(234)	17
Ending balance	1,346	1,513
Ending balance: related to loans individually evaluated for impairment		100
Ending balance: related to loans collectively evaluated for impairment	1,346	1,413
LHFI [Abstract]
Ending balance	108,146	85,980
Ending balance: individually evaluated for impairment	2,105	2,687
Ending balance: collectively evaluated for impairment	106,041	83,293
Multi-family [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	171	285
(Credit) provision	92	(114)
Ending balance	263	171
Ending balance: related to loans collectively evaluated for impairment	263	171
LHFI [Abstract]
Ending balance	23,389	16,249
Ending balance: collectively evaluated for impairment	23,389	16,249
Residential real estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	586	616
Charge-offs	(40)
Recoveries	35	20
(Credit) provision	75	(50)
Ending balance	656	586
Ending balance: related to loans individually evaluated for impairment	17	27
Ending balance: related to loans collectively evaluated for impairment	639	559
LHFI [Abstract]
Ending balance	56,899	51,588
Ending balance: individually evaluated for impairment	653	889
Ending balance: collectively evaluated for impairment	56,246	50,699
Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,749	1,429
Charge-offs	(930)	(612)
Recoveries	57	26
(Credit) provision	1,419	906
Ending balance	2,295	1,749
Ending balance: related to loans individually evaluated for impairment	340	194
Ending balance: related to loans collectively evaluated for impairment	1,955	1,555
LHFI [Abstract]
Ending balance	61,838	64,341
Ending balance: individually evaluated for impairment	1,242	876
Ending balance: collectively evaluated for impairment	60,596	63,465
Tax certificates [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	347	667
Charge-offs	(139)	(471)
Recoveries	14	53
(Credit) provision	20	98
Ending balance	242	347
Ending balance: related to loans individually evaluated for impairment	8
Ending balance: related to loans collectively evaluated for impairment	234	347
LHFI [Abstract]
Ending balance	3,705	4,755
Ending balance: individually evaluated for impairment	1,907	1,125
Ending balance: collectively evaluated for impairment	1,798	3,630
Consumer [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	27	38
Recoveries	2
(Credit) provision		(11)
Ending balance	29	27
Ending balance: related to loans collectively evaluated for impairment	29	27
LHFI [Abstract]
Ending balance	3,102	2,527
Ending balance: collectively evaluated for impairment	$ 3,102	2,527
Unallocated [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		149
(Credit) provision		$ (149)

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

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

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

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No definition available.

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

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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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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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