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	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Supplemental cash flows:
Cash paid for interest, net of amounts capitalized	$ 5,380	$ 5,861
Cash paid for reorganization items, net	351	650
Cash paid for taxes	85	0
Noncash investing and financing activities:
Change in capital expenditures in payables and accrued liabilities	$ (3,618)	$ (5,034)