Commitments and Contingencies (Schedule for Unfunded Commitments) (Details) - Reserve for Off-balance Sheet Activities [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 2,119	$ 5,151	$ 4,384
Provision (benefit)	168	(3,032)	767
Ending balance	$ 2,287	$ 2,119	$ 5,151