Income Taxes - Reconciliation of Unrecognized Tax Benefits - (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Tax
Balance	$ 127,085	$ 5,903
Additions for current year tax positions	1,478	6,297
Additions for Reorganization Transactions		115,877
Reductions for prior years' tax positions: Expiration of statute of limitations	(254)	(353)
Balance	128,309	127,724
Interest and Penalties
Balance	9,965	2,935
Additions for current year tax positions		1,075
Additions for Reorganization Transactions	226	5,459
Additions for prior years' tax positions: Accrual of interest and penalties	209	67
Reductions for prior years' tax positions: Expiration of statute of limitations	(101)	(144)
Balance	10,299	9,392
Total
Balance	137,050	8,838
Additions for current year tax positions	1,478	7,372
Additions for Reorganization Transactions	226	121,336
Additions for prior years' tax positions: Accrual of interest and penalties	209	67
Reductions for prior years' tax positions: Expiration of statute of limitations	(355)	(497)
Balance	138,608	137,116
Unrecognized tax benefits
Amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate	11,000	11,000
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	107,100
Unrecognized interest and penalties, reasonably possible to decrease within the next 12 months	5,200
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