Supplemental Disclosures to the Unaudited Condensed Consolidated Balance Sheets and Unaudited Condensed Consolidated Statements of Cash Flows - Summary of Supplemental Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Supplemental cash flows:
Cash paid for interest, net of amounts capitalized	$ 2,265	$ 3,017
Cash paid for reorganization items, net	6	186
Noncash investing and financing activities:
Increase in capital expenditures in payables and accrued liabilities	$ 1,916	$ 3,206