Other Comprehensive Income (Loss) (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Accumulated other comprehensive loss	$ 55,659	$ 29,819
Net Unrealized Gains (Losses) on Cash Flow Hedges [Member] | Valuation Allowance of Deferred Tax Assets [Member]
Class of Stock [Line Items]
Accumulated other comprehensive loss	12,100
Net Unrealized Gains (Losses) on Investment Securities Available for Sale [Member] | Valuation Allowance of Deferred Tax Assets [Member]
Class of Stock [Line Items]
Accumulated other comprehensive loss	$ 13,300