Income Taxes - Components of net deferred taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Net operating loss carryforwards	$ 3,878,344	$ 3,676,333
Tax credit and other attribute carryforwards	84,812	84,624
Accrued interest	13,302
Depreciation and amortization for tax in excess of book expense	20,431	118,151
Other	100,316	135,729
Subtotal	4,097,205	4,014,837
Valuation allowance	(3,839,885)	(3,754,207)
Deferred tax assets	257,320	260,630
Deferred tax liabilities:
Other	2,858	4,772
Deferred tax liability	2,858	4,772
Net deferred tax assets (liabilities)	254,462	255,858
Balance Sheet Summary :
Net noncurrent deferred tax asset	257,320	258,631
Net noncurrent deferred tax liability	(2,858)	(2,773)
Net deferred tax assets (liabilities)	$ 254,462	$ 255,858