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SEGMENT INFORMATION - Revenues from External Customers (Details) - Perenco and SNH - Sales revenue, net - Customer concentration risk - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues from external customers:
Concentration risk amount	$ 213,970	$ 221,020	$ 226,061
Concentration risk percentage (in percent)	80.00%	85.00%	86.00%

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Concentration Risk, Amount

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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