Income Taxes - Reconciliation of Unrecognized Tax Benefits - (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Tax
Balance	$ 5,903	$ 5,748	$ 5,433
Additions for current year tax positions	490	680	589
Additions for Reorganization Transactions	121,401
Additions for prior years' tax positions: Other		97	346
Reductions for prior years' tax positions: Expiration of statute of limitations	(709)	(622)	(620)
Balance	127,085	5,903	5,748
Interest and Penalties
Balance	2,935	2,972	3,044
Additions for Reorganization Transactions	7,017
Additions for prior years' tax positions: Accrual of interest and penalties	301	178	542
Additions for prior years' tax positions: Other		25	(4)
Reductions for prior years' tax positions: Expiration of statute of limitations	(288)	(240)	(610)
Balance	9,965	2,935	2,972
Total
Balance	8,838	8,720	8,477
Additions for current year tax positions	490	680	589
Additions for Reorganization Transactions	128,418
Additions for prior years' tax positions: Accrual of interest and penalties	301	178	542
Additions for prior years' tax positions: Other		122	342
Reductions for prior years' tax positions: Expiration of statute of limitations	(997)	(862)	(1,230)
Balance	137,050	8,838	8,720
Unrecognized tax benefits
Amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate	10,600	6,600	6,500
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	5,000
Net expense attributable to interest and penalties recorded	800	0	$ 400
Accrued interest and penalties attributable to uncertain tax positions and undisputed tax adjustments	12,100	5,000
Accrued interest and penalties attributable to unrecognized tax benefits	$ 10,000	$ 2,900