Fair Value (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value assets liabilities transfers amount between level 1 and level 2	$ 0	$ 0	$ 0	$ 0
Impaired loans, unpaid principal balance with allowance recorded	2,958,000		2,958,000		$ 4,014,000
Impaired loans, allowance	151,000		151,000		497,000
Provision for loan losses	990,000	850,000	1,770,000	1,300,000
Troubled debt restructurings	7,800,000		$ 7,800,000		9,300,000
Maximum maturity period of short term borrowings			90 days
Measured Using Present Value of Cash Flows
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Troubled debt restructurings	2,800,000		$ 2,800,000		2,900,000
Collateral Dependent Impaired Loans
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impaired loans, unpaid principal balance with allowance recorded	138,000		138,000		3,400,000
Impaired loans, allowance	14,000		14,000		$ 383,000
Provision for loan losses	$ 0	$ 209,000	$ 0	$ 209,000