Income Taxes - Reconciliation of Unrecognized Tax Benefits - (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Tax
Balance	$ 130,619	$ 127,085	$ 5,903
Additions for current year tax positions	2,260	2,727	490
Additions for Reorganization Transactions			121,401
Additions for prior years' tax positions: Other		1,152
Reductions for prior years' tax positions: Expiration of statute of limitations	(280)	(345)	(709)
Reductions for prior years' tax positions: Other	(1,029)
Balance	131,570	130,619	127,085
Interest and Penalties
Balance	10,660	9,965	2,935
Additions for Reorganization Transactions	832	226	7,017
Additions for prior years' tax positions: Accrual of interest and penalties	1,159	621	301
Reductions for prior years' tax positions: Expiration of statute of limitations	(127)	(152)	(288)
Balance	12,524	10,660	9,965
Total
Balance	141,279	137,050	8,838
Additions for current year tax positions	2,260	2,727	490
Additions for Reorganization Transactions	832	226	128,418
Additions for prior years' tax positions: Accrual of interest and penalties	1,159	621	301
Additions for prior years' tax positions: Other		1,152
Reductions for prior years' tax positions: Expiration of statute of limitations	(407)	(497)	(997)
Reductions for prior years' tax positions: Other	(1,029)
Balance	144,094	141,279	137,050
Unrecognized tax benefits
Amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate	16,200	14,900	10,600
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	14,600
Unrecognized interest and penalties, reasonably possible to decrease within the next 12 months	6,200
Net expense attributable to interest and penalties recorded	1,000	700	$ 800
Accrued interest and penalties attributable to uncertain tax positions and undisputed tax adjustments	13,800	12,800
Accrued interest and penalties attributable to unrecognized tax benefits	$ 12,500	$ 10,700