Loans Receivable, Classes of Loan Portfolio by Aging Categories of Performing and Nonaccrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	$ 7,520	$ 5,734
Current	621,430	616,500
Total loans	628,950	622,234
Non-Accrual	9,852	8,974
30-59 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	1,616	2,135
60-89 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	2,245	65
90+ Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	3,659	3,534
Residential Mortgage [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	4,510	4,119
Current	256,093	281,811
Total loans	260,603	285,930
Non-Accrual	3,580	3,191
Residential Mortgage [Member] | 30-59 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	1,472	1,593
Residential Mortgage [Member] | 60-89 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	2,074	65
Residential Mortgage [Member] | 90+ Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	964	2,461
Construction Acquisition and Development [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Current	57,166	77,478
Total loans	57,166	77,478
Non-Accrual	0	244
Construction Acquisition and Development [Member] | 30-59 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Construction Acquisition and Development [Member] | 60-89 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Construction Acquisition and Development [Member] | 90+ Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Land [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	112	293
Current	48,552	28,384
Total loans	48,664	28,677
Non-Accrual	269	277
Land [Member] | 30-59 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	106	137
Land [Member] | 60-89 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Land [Member] | 90+ Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	6	156
Lines of Credit [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	149
Current	29,657	20,039
Total loans	29,657	20,188
Non-Accrual	150	483
Lines of Credit [Member] | 30-59 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	149
Lines of Credit [Member] | 60-89 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Lines of Credit [Member] | 90+ Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Commercial Real Estate [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	686	545
Current	195,024	174,367
Total loans	195,710	174,912
Non-Accrual	2,938	2,681
Commercial Real Estate [Member] | 30-59 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	253
Commercial Real Estate [Member] | 60-89 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	171	0
Commercial Real Estate [Member] | 90+ Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	515	292
Commercial Non-Real Estate [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Current	16,811	9,296
Total loans	16,811	9,296
Non-Accrual	1	0
Commercial Non-Real Estate [Member] | 30-59 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Commercial Non-Real Estate [Member] | 60-89 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Commercial Non-Real Estate [Member] | 90+ Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Home Equity [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	2,208	625
Current	16,921	23,904
Total loans	19,129	24,529
Non-Accrual	2,914	2,098
Home Equity [Member] | 30-59 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	34	0
Home Equity [Member] | 60-89 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Home Equity [Member] | 90+ Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	2,174	625
Consumer [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	4	3
Current	1,206	1,221
Total loans	1,210	1,224
Non-Accrual	0	0
Consumer [Member] | 30-59 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	4	3
Consumer [Member] | 60-89 Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Consumer [Member] | 90+ Days Past Due [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total Past Due	0	0
Unfunded [Member]
Classes of the loan portfolio summarized by the aging categories of performing loans and nonaccrual loans [Abstract]
Total loans	$ 15,728	$ 21,101