Acquisition (Schedule of Fair Value of Net Assets Acquired) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 10, 2017	Dec. 31, 2016
Acquisition [Abstract]
Cash and due from banks		$ 2,856
Loans		1,211,523
Property and equipment		12,332
Accrued interest receivable		2,969
Identifiable intangible assets		3,900
Other assets		63
Total identifiable assets		1,233,643
Deposits		398,171
Short-term borrowings		510,749
Long-term debt		93,120
Other liabilities		1,607
Total liabilities		1,003,647
Net identifiable assets acquired		229,996
Goodwill	$ 716,761	95,568	$ 621,193
Net assets acquired		$ 325,564