Interest Rate Swap Derivatives (Details 2) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Net amounts of liabilities presented in the balance sheet	$ 10	$ 692
Interest Rate Swap [Member]
Gross Amount of Recognized Assets	2,201
Gross amounts of recognized liabilities		711
Gross amounts offset in the balance sheet		(19)
Net amounts of assets presented in the balance sheet	2,201
Net amounts of liabilities presented in the balance sheet		692
Gross amounts not offset in the balance sheet cash collateral posted		(550)
Gross amounts not offset in the balance sheet net amount	2,201
Gross amounts not offset in the balance sheet net amount		142
Interest Rate Swap [Member] | Counter Party 1 [Member]
Gross Amount of Recognized Assets	1,619
Gross amounts of recognized liabilities		514
Gross amounts offset in the balance sheet		(19)
Net amounts of assets presented in the balance sheet	1,619
Net amounts of liabilities presented in the balance sheet		495
Gross amounts not offset in the balance sheet cash collateral posted		(380)
Gross amounts not offset in the balance sheet net amount	1,619
Gross amounts not offset in the balance sheet net amount		115
Interest Rate Swap [Member] | Counter Party 2 [Member]
Gross Amount of Recognized Assets	582
Gross amounts of recognized liabilities		197
Net amounts of assets presented in the balance sheet	582
Net amounts of liabilities presented in the balance sheet		197
Gross amounts not offset in the balance sheet cash collateral posted		(170)
Gross amounts not offset in the balance sheet net amount	$ 582
Gross amounts not offset in the balance sheet net amount		$ 27