Income Taxes - Schedule Of Deferred Tax Assets And Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax liabilities:
Depreciation	$ 153,226	$ 166,239
Debt discounts on 2022 Notes, 2023 Notes and 2026 Notes	9,298	4,643
Total deferred tax liabilities	162,524	170,882
Deferred tax assets:
Net operating losses	(59,794)	(64,178)
Reserves, accrued liabilities and other	(11,631)	(13,203)
Total deferred tax assets	(71,425)	(77,381)
Valuation allowance	19,722	18,631
Net deferred tax liabilities	$ 110,821	$ 112,132