Taxes (Schedule of Components of Income Tax) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Dec. 31, 2015	Dec. 31, 2014
Predecessor [Member]
Current:
Federal		$ 0	$ 0	$ 0
State		7	3	25
Total current		7	3	25
Deferred:
Federal		(4,720)	(329,393)	18,535
State		87	(43,990)	7,074
Total deferred		(4,633)	(373,383)	25,609
Provision for (benefit from) income taxes		$ (4,626)	$ (373,380)	$ 25,634
Successor [Member]
Current:
Federal	$ 0
State	(252)
Total current	(252)
Deferred:
Federal	1,352
State	56
Total deferred	1,408
Provision for (benefit from) income taxes	$ 1,156