Restructuring and Other Charges (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 6,398	$ 2,209	$ 5,335
Severance Costs		800
Office lease exit [Member]
Restructuring Cost and Reserve [Line Items]
Business Exit Costs		$ 1,400