Income Taxes (Income Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current
Federal	$ 10,122	$ (6,306)	$ 0
State	2,248	(947)	0
Total current provision (benefit)	12,370	(7,253)	0
Deferred
Federal	(45,416)	(28,968)	0
State	(6,826)	(4,356)	0
Total deferred benefit	(52,242)	(33,324)	0
(Benefit from) provision for from income taxes	(36,303)	(33,264)	2,195
REI Segment [Member]
Deferred
(Benefit from) provision for from income taxes	$ 3,569	$ 7,313	$ 2,195