Derivatives (Offsetting Derivatives Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Derivative Liabilities
Total liability derivatives	$ 11,393	$ 15,982
Interest Rate Swap
Derivative Liabilities
Derivative liabilities, gross amounts of recognized liabilities	7,717	12,746
Derivative liability, fair value, gross asset	0	0
Total liability derivatives	7,717	12,746
Derivative Liability, Fair Value, Amount Not Offset Against Collateral [Abstract]
Derivative liabilities, gross amounts not offset in the statement of financial position, financial instruments	(7,717)	(12,746)
Derivative liabilities, gross amounts not offset in the statement of financial position, collateral posted	0	0
Derivative liabilities, net amount	0	0
Foreign currency derivative
Derivative Liabilities
Derivative liabilities, gross amounts of recognized liabilities	450	273
Derivative liability, fair value, gross asset	0	0
Total liability derivatives	450	273
Derivative Liability, Fair Value, Amount Not Offset Against Collateral [Abstract]
Derivative liabilities, gross amounts not offset in the statement of financial position, financial instruments	0	0
Derivative liabilities, gross amounts not offset in the statement of financial position, collateral posted	0	0
Derivative liabilities, net amount	$ 450	$ 273