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Segment information - Revenue from external customers (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 309,702	$ 248,665
Revenue from Contract with Customer Benchmark | Customer Concentration Risk | The Cool Pool
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 66,691	$ 141,024
Concentration risk, percentage	23.00%	61.00%
Revenue from Contract with Customer Benchmark | Customer Concentration Risk | Perenco and SNH
Disaggregation of Revenue [Line Items]
Total operating revenues	$ 163,571	$ 73,101
Concentration risk, percentage	56.00%	31.00%

X

- Definition

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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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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