Financial Instruments and Fair Value Disclosures - Additional Information (Detail) - USD ($) $ in Thousands	4 Months Ended	9 Months Ended		12 Months Ended
	Apr. 23, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Letters of credit to guarantee		$ 4,600
Expired letter of credit		2,300
Trade receivables past due		7,300
Trade receivables reserved for previous years		5,500
Trade receivables remaining past due		1,800
Trade receivables, older than 90 Days past due		300
Allowance for credit losses	$ 5,555	$ 5,614		$ 5,562
Loss on impairment of assets	$ 197,027		$ 774,028
Measurement period for determining fair value of debt instruments		10 days
Fair Value Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loss on impairment of assets		$ 0		0
ASU 2016-13 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Estimate of credit losses		$ 100		$ 100