Restructuring Charges (Restructuring Reserve) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Reserve [Roll Forward]
Beginning balance	$ 7,377	$ 6,302	$ 8,830	$ 2,955
Accruals for efficiency initiatives	0	0	(4)	8,046
Payments	(418)	(1,578)	(1,867)	(6,277)
Ending balance	6,959	4,724	6,959	4,724
Severance Charges [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	2,253	6,224	3,291	1,572
Accruals for efficiency initiatives	0	0	0	8,046
Payments	(221)	(1,571)	(1,259)	(4,965)
Ending balance	2,032	4,653	2,032	4,653
Lease Termination Charges [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	5,124	78	5,539	1,383
Accruals for efficiency initiatives	0	0	(4)	0
Payments	(197)	(7)	(608)	(1,312)
Ending balance	$ 4,927	$ 71	$ 4,927	$ 71