Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Schedule of Revenue by Major Customers by Reporting Segments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total revenues	$ 542,367	$ 886,434	$ 943,917
Customer Concentration Risk [Member] \| Revenue Benchmark \| Minimum
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	10.00%
Customer Concentration Risk [Member] \| Revenue Benchmark \| Maximum
Segment Reporting Information [Line Items]
Concentration Risk, Percentage		10.00%	10.00%
Customer Concentration Risk [Member] \| Revenue Benchmark \| Shell
Segment Reporting Information [Line Items]
Total revenues	$ 60,800
Concentration Risk, Percentage	11.00%
Customer Concentration Risk [Member] \| Revenue Benchmark \| Vitol
Segment Reporting Information [Line Items]
Total revenues	$ 55,500
Concentration Risk, Percentage	10.00%