Recently Adopted Accounting Pronouncements - Schedule of Activity in the Allowance for Credit Losses (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at June 30, 2020	$ 556
Trade And Others Receivables [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at January 1, 2020	70
Cumulative effect adjustment upon adoption of standard	163
Current period provision for expected credit losses	323
Balance at June 30, 2020	556
Due from Affiliates [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at January 1, 2020	20,083
Current period provision for expected credit losses	53,581
Other	(1,705)
Balance at June 30, 2020	$ 71,959