Income Taxes - Reconciliation of Unrecognized Tax Benefits - (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Tax
Balance	$ 131,570	$ 130,619	$ 127,085
Additions for current year tax positions	1,038	2,260	2,727
Additions for Reorganization Transactions				$ 121,400
Additions for prior years' tax positions: New uncertain tax positions identified	1,894
Additions for prior years' tax positions: Other			1,152
Reductions for prior years' tax positions: Expiration of statute of limitations	(190)	(280)	(345)
Reductions for prior years' tax positions: Other		(1,029)
Balance	134,312	131,570	130,619	127,085
Interest and Penalties
Balance	12,524	10,660	9,965
Additions for Reorganization Transactions	986	832	226	7,000
Additions for prior years' tax positions: Accrual of interest and penalties	1,280	1,159	621
Reductions for prior years' tax positions: Expiration of statute of limitations	(89)	(127)	(152)
Balance	14,701	12,524	10,660	9,965
Total
Balance	144,094	141,279	137,050
Additions for current year tax positions	1,038	2,260	2,727
Additions for Reorganization Transactions	986	832	226
Additions for prior years' tax positions: New uncertain tax positions identified	1,894
Additions for prior years' tax positions: Accrual of interest and penalties	1,280	1,159	621
Additions for prior years' tax positions: Other			1,152
Reductions for prior years' tax positions: Expiration of statute of limitations	(279)	(407)	(497)
Reductions for prior years' tax positions: Other		(1,029)
Balance	149,013	144,094	141,279	$ 137,050
Unrecognized tax benefits
Amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate	19,100	16,200	14,900
Unrecognized tax benefits attributable to tax refund claims in State of California	93,900	93,900
Unrecognized tax benefits, reasonably possible to decrease within the next 12 months	1,400
Unrecognized interest and penalties, reasonably possible to decrease within the next 12 months	900
Net expense attributable to interest and penalties recorded	2,400	1,000	$ 700
Accrued interest and penalties attributable to uncertain tax positions and undisputed tax adjustments	16,300	13,800
Accrued interest and penalties attributable to unrecognized tax benefits	14,700	$ 12,500
Determination of taxes benefit is currently recognized	$ 0