Income Taxes - Schedule Of Deferred Tax Assets And Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax liabilities:
Depreciation	$ 166,239	$ 149,974
Debt discounts on 2022 Notes and 2023 Notes	4,643	5,902
Prepaid and other	0	1,309
Total deferred tax liabilities	170,882	157,185
Deferred tax assets:
Net operating losses	(64,178)	(47,916)
Reserves, accrued liabilities and other	(13,203)	(21,347)
Total deferred tax assets	(77,381)	(69,263)
Valuation allowance	18,631	17,940
Net deferred tax liabilities	$ 112,132	$ 105,862