Derivative Financial Instruments (Rollforward of Amounts in Accumulated Other Comprehensive Income Related to Interest Rate Swaps Designated as Cash Flow Hedges) (Details) - Interest Rate Contract - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Rollforward of AOCI from Cash Flow Hedging Derivatives [Roll Forward]
Unrealized loss at beginning of period	$ (4,062)	$ (3,971)
Amount reclassified from accumulated other comprehensive income to interest expense on deposits and junior subordinated debentures	2,082	1,974
Amount of loss recognized in other comprehensive income	(1,549)	(2,065)
Unrealized loss at end of period	$ (3,529)	$ (4,062)