Reorganization items, net (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
Reorganization items, net	$ (20,904)	$ 0	$ (46,050)	$ 0
Professional fee expense	(22,600)		(62,700)
Non-cash gains on rejected contracts	1,700		16,600
Payments for reorganization items	$ 16,000		$ 31,100