Fair Value (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 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
Impaired loans, unpaid principal balance with allowance recorded	3,996		$ 4,014
Impaired loans, allowance	482		497
Provision for loan losses	780	450
Troubled debt restructurings	$ 8,800		9,300
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			2,900
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	$ 2,100		3,400
Impaired loans, allowance	348		$ 383
Provision for loan losses	$ 0	$ 215