Supplemental Financial Information - Noncash Operating and Investing Activities (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Condensed Financial Statements, Captions [Line Items]
Accrued but unpaid capital expenditures at period end	$ 5,242	$ 39,169
Common stock withheld for payroll tax obligations	395	1,381
Cash interest payments	19,843	76,219
Cash paid for reorganization items, net	23,818
Foreign [Member]
Cash income taxes paid, net of (refunds):
Cash income taxes paid, net of refunds	11,229	13,227
U.S. Federal [Member]
Cash income taxes paid, net of (refunds):
Cash income taxes paid, net of refunds	(42,462)
State [Member]
Cash income taxes paid, net of (refunds):
Cash income taxes paid, net of refunds	$ 36	$ (15)