Income Taxes - Components of net deferred taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Net operating loss carryforwards	$ 4,004,602	$ 3,878,344
Tax credit and other attribute carryforwards	86,896	84,812
Accrued interest	19,311	13,302
Property, plant and equipment		20,431
Other	106,520	100,316
Subtotal	4,217,329	4,097,205
Valuation allowance	(3,962,200)	(3,839,885)
Deferred tax assets	255,129	257,320
Deferred tax liabilities:
Property, plant and equipment	15,181
Other	2,443	2,858
Deferred tax liability	17,624	2,858
Net deferred tax assets (liabilities)	237,505	254,462
Balance Sheet Summary :
Net noncurrent deferred tax asset	238,871	257,320
Net noncurrent deferred tax liability	(1,366)	(2,858)
Net deferred tax assets (liabilities)	$ 237,505	$ 254,462