Loans Receivable, Loans Receivable (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Loans receivable [Abstract]
Total loans	$ 661,648,000		$ 681,959,000
Less [Abstract]
Unfunded commitments included above	(31,429,000)		(36,162,000)
Total loans excluding unfunded commitments	630,219,000		645,797,000
Individually evaluated for impairment	40,090,000		42,091,000
Collectively evaluated for impairment	590,129,000		603,706,000
Total loans excluding unfunded commitments	630,219,000		645,797,000
Allowance for loan losses	(8,964,000)		(9,435,000)
Deferred loan origination fees and costs, net	(2,628,000)		(2,480,000)
Net Loans	618,627,000		633,882,000
Nonaccrual period of loan considered to be impaired	90 days
Interest income and capitalized interest from interest reserves	57,000	5,000
Residential Mortgage [Member]
Loans receivable [Abstract]
Total loans	309,904,000		309,461,000
Less [Abstract]
Individually evaluated for impairment	28,880,000		28,535,000
Collectively evaluated for impairment	281,024,000		280,926,000
Loan to value ratio (in hundredths)	80.00%
Construction, Land Acquisition and Development [Member]
Loans receivable [Abstract]
Total loans	81,418,000		84,325,000
Less [Abstract]
Individually evaluated for impairment	919,000		917,000
Collectively evaluated for impairment	80,499,000		83,408,000
Term of the construction period, maximum	2 years
Construction, Land Acquisition and Development [Member] | Minimum [Member]
Less [Abstract]
Extension period for loans	12 months
Construction, Land Acquisition and Development [Member] | Maximum [Member]
Less [Abstract]
Extension period for loans	18 months
Land [Member]
Loans receivable [Abstract]
Total loans	30,043,000		30,426,000
Less [Abstract]
Individually evaluated for impairment	1,948,000		2,039,000
Collectively evaluated for impairment	28,095,000		28,387,000
Lines of Credit [Member]
Loans receivable [Abstract]
Total loans	17,651,000		19,251,000
Less [Abstract]
Individually evaluated for impairment	453,000		454,000
Collectively evaluated for impairment	17,198,000		18,797,000
Commercial Real Estate [Member]
Loans receivable [Abstract]
Total loans	185,367,000		198,539,000
Less [Abstract]
Individually evaluated for impairment	4,462,000		6,309,000
Collectively evaluated for impairment	180,905,000		192,230,000
Commercial Non-Real Estate [Member]
Loans receivable [Abstract]
Total loans	10,042,000		10,167,000
Less [Abstract]
Individually evaluated for impairment	269,000		274,000
Collectively evaluated for impairment	9,773,000		9,893,000
Home Equity [Member]
Loans receivable [Abstract]
Total loans	26,233,000		28,750,000
Less [Abstract]
Individually evaluated for impairment	3,147,000		3,551,000
Collectively evaluated for impairment	23,086,000		25,199,000
Consumer [Member]
Loans receivable [Abstract]
Total loans	990,000		1,040,000
Less [Abstract]
Individually evaluated for impairment	12,000		12,000
Collectively evaluated for impairment	$ 978,000		$ 1,028,000