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Loans - Schedule of Change in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Beginning balance	$ 3,991	$ 3,915
Provision (credit) for loan losses
Charge-offs	(9)	(9)
Recoveries	11	9
Ending balance	3,993	3,915
Individually evaluated for impairment, Recorded investment	3,576	2,147
Individually evaluated for impairment, Allowance for loan losses	640	413
Collectively evaluated for impairment, Recorded investment	69,291	69,782
Collectively evaluated for impairment, Allowance for loan losses	3,353	3,578
Residential Real Estate [Member]
Beginning balance	641	310
Provision (credit) for loan losses	6	(8)
Charge-offs
Recoveries
Ending balance	647	302
Individually evaluated for impairment, Recorded investment	973	1,172
Individually evaluated for impairment, Allowance for loan losses	324	330
Collectively evaluated for impairment, Recorded investment	26,023	24,882
Collectively evaluated for impairment, Allowance for loan losses	323	311
Multi-Family Real Estate [Member]
Beginning balance	59	58
Provision (credit) for loan losses	8	15
Charge-offs
Recoveries
Ending balance	67	73
Individually evaluated for impairment, Recorded investment
Individually evaluated for impairment, Allowance for loan losses
Collectively evaluated for impairment, Recorded investment	7,934	7,356
Collectively evaluated for impairment, Allowance for loan losses	67	59
Commercial Real Estate [Member]
Beginning balance	759	787
Provision (credit) for loan losses	(47)	31
Charge-offs
Recoveries
Ending balance	712	818
Individually evaluated for impairment, Recorded investment	228	975
Individually evaluated for impairment, Allowance for loan losses	89	83
Collectively evaluated for impairment, Recorded investment	30,222	31,177
Collectively evaluated for impairment, Allowance for loan losses	623	676
Land and Construction [Member]
Beginning balance	22	120
Provision (credit) for loan losses		(61)
Charge-offs
Recoveries	6	6
Ending balance	28	65
Individually evaluated for impairment, Recorded investment
Individually evaluated for impairment, Allowance for loan losses
Collectively evaluated for impairment, Recorded investment	1,363	1,051
Collectively evaluated for impairment, Allowance for loan losses	28	22
Commercial [Member]
Beginning balance	55	188
Provision (credit) for loan losses	224	(62)
Charge-offs
Recoveries
Ending balance	279	126
Individually evaluated for impairment, Recorded investment	2,375
Individually evaluated for impairment, Allowance for loan losses	227
Collectively evaluated for impairment, Recorded investment	3,143	4,522
Collectively evaluated for impairment, Allowance for loan losses	52	55
Consumer [Member]
Beginning balance	86	165
Provision (credit) for loan losses	(23)	(7)
Charge-offs	(9)	(9)
Recoveries	5	3
Ending balance	59	152
Individually evaluated for impairment, Recorded investment
Individually evaluated for impairment, Allowance for loan losses
Collectively evaluated for impairment, Recorded investment	606	794
Collectively evaluated for impairment, Allowance for loan losses	59	86
Unallocated [Member]
Beginning balance	2,369	2,287
Provision (credit) for loan losses	(168)	92
Charge-offs
Recoveries
Ending balance	2,201	2,379
Individually evaluated for impairment, Recorded investment
Individually evaluated for impairment, Allowance for loan losses
Collectively evaluated for impairment, Recorded investment
Collectively evaluated for impairment, Allowance for loan losses	$ 2,201	$ 2,369

X

- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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