Borrowings (Securities Under Repurchase Agreements) (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Short-term borrowings [Line Items]
Amounts related to securities sold under agreements to repurchase not included in offsetting disclosure in Footnote 14	$ 19,000
Securities sold under agreements to repurchase
Short-term borrowings [Line Items]
Overnight and continuous	0
Up to 30 Days	10,000
30-90 Days	0
Greater than 90 Days	9,000
Total	$ 19,000