Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Deferred compensation	$ 2,106	$ 2,073
Other accrued liabilities	2,142	1,051
Right-of-use-assets	6,471	3,774
Interest expense carryforward	36,165	23,164
Net operating loss	170,362	163,750
Other	10,255	11,220
Less valuation allowance on deferred tax assets	(64,655)	(51,589)
Total deferred tax assets	162,846	153,443
Property, plant and equipment	(183,335)	(182,572)
Lease liability	(6,508)	(3,809)
Prepaid and other insurance reserves	(3,942)	(2,779)
Total deferred tax liabilities	(193,785)	(189,160)
Net deferred tax liabilities	$ (30,939)	$ (35,717)