Income Taxes - Schedule of Deferred Tax Assets and liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Operating loss and interest deduction carry forwards	$ 150,001	$ 28,684
Interest rate swap	9,150	843
Other	6,973	868
Total deferred tax assets	166,124	30,395
Valuation allowance	(36,977)	(11,355)
Total net deferred tax assets	129,147	19,040
Property and equipment	(211,018)	(7,324)
Net unbilled revenue	(14,776)	(1,449)
Other	(4,010)	(737)
Total deferred tax liabilities	(229,804)	(9,510)
Net deferred tax assets		$ 9,530
Net deferred tax liabilities	$ (100,657)