Restructuring (Calculation of Restructuring Charges) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring and Related Activities [Abstract]
Restructuring costs				$ 9,433	$ 1,147
Impairment of lease related assets		$ 6,900		6,940	0
Total restructuring and lease termination costs				16,373	1,147
Less: restructuring costs included in discontinued operations				(522)	(590)
Restructuring and lease termination costs (Note 11)	$ 0		$ 0	$ 15,851	$ 557