Deposits (Schedule of Maturities of Time Deposits Over One Hundred Thousand Dollars) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deposits [Abstract]
Maturing within three months	$ 592,759	$ 535,459
After three but within six months	429,756	434,591
After six but within 12 months	817,615	900,156
After 12 months	904,195	709,376
Total	$ 2,744,325	$ 2,579,582