Income Taxes - Reconciliation of Unrecognized Tax Benefits - (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Tax
Balance	$ 127,085	$ 5,903
Additions for current year tax positions	1,727	6,268
Additions for Reorganization Transactions		115,877
Reductions for prior years' tax positions: Expiration of statute of limitations	(258)	(530)
Reductions for prior years' tax positions: Other		(12)
Balance	128,554	127,506
Interest and Penalties
Balance	9,965	2,935
Additions for current year tax positions		1,117
Additions for Reorganization Transactions	226	5,459
Additions for prior years' tax positions: Accrual of interest and penalties	295	95
Reductions for prior years' tax positions: Expiration of statute of limitations	(152)	(215)
Reductions for prior years' tax positions: Other		(1)
Balance	10,334	9,390
Total
Balance	137,050	8,838
Additions for current year tax positions	1,727	7,385
Additions for Reorganization Transactions	226	121,336
Additions for prior years' tax positions: Accrual of interest and penalties	295	95
Reductions for prior years' tax positions: Expiration of statute of limitations	(410)	(745)
Reductions for prior years' tax positions: Other		(13)
Balance	138,888	136,896
Unrecognized tax benefits
Amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate	11,200	10,900
Unrecognized tax benefits attributable to tax refund claims in State of California	93,900
Unrecognized tax benefits, reasonably possible to decrease within the next 12 months	107,200
Unrecognized interest and penalties, reasonably possible to decrease within the next 12 months	5,400
Net expense attributable to interest and penalties recorded	400	$ 200
Accrued interest and penalties attributable to uncertain tax positions and undisputed tax adjustments	12,500		$ 12,100
Accrued interest and penalties attributable to unrecognized tax benefits	$ 10,300		$ 10,000