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Concentration of Risks (Details) - Customer Concentration Risk - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenue
Concentration Risk [Line Items]
Revenue	$ 8,450	$ 9,270
Concentration risk, percentage	21.00%	20.00%
Revenue | LNG
Concentration Risk [Line Items]
Revenue	$ 8,450	$ 13,476
Concentration risk, percentage	21.00%	31.00%
Revenue | Power Delivery
Concentration Risk [Line Items]
Revenue	$ 754	$ 879
Concentration risk, percentage	15.00%	26.00%
Revenue | Customer 1
Concentration Risk [Line Items]
Revenue	$ 4,915	$ 9,270
Concentration risk, percentage	12.00%	20.00%
Revenue | Customer 1 | LNG
Concentration Risk [Line Items]
Revenue	$ 4,915	$ 9,270
Concentration risk, percentage	12.00%	21.00%
Revenue | Customer 1 | Power Delivery
Concentration Risk [Line Items]
Revenue	$ 527	$ 472
Concentration risk, percentage	10.00%	14.00%
Revenue | Customer 2 | LNG
Concentration Risk [Line Items]
Revenue	$ 3,535	$ 4,206
Concentration risk, percentage	9.00%	10.00%
Revenue | Customer 2 | Power Delivery
Concentration Risk [Line Items]
Revenue	$ 96	$ 407
Concentration risk, percentage	2.00%	12.00%
Revenue | Customer 3 | Power Delivery
Concentration Risk [Line Items]
Revenue	$ 131
Concentration risk, percentage	3.00%
Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	46.00%	19.00%
Accounts Receivable	$ 2,615	$ 1,172
Accounts Receivable | LNG
Concentration Risk [Line Items]
Concentration risk, percentage	52.00%	23.00%
Accounts Receivable	$ 2,615	$ 1,172
Accounts Receivable | Power Delivery
Concentration Risk [Line Items]
Concentration risk, percentage	33.00%	17.00%
Accounts Receivable	$ 202	$ 154
Accounts Receivable | Customer 1
Concentration Risk [Line Items]
Concentration risk, percentage	25.00%	19.00%
Accounts Receivable	$ 1,423	$ 1,172
Accounts Receivable | Customer 1 | LNG
Concentration Risk [Line Items]
Concentration risk, percentage	28.00%	23.00%
Accounts Receivable	$ 1,423	$ 1,172
Accounts Receivable | Customer 1 | Power Delivery
Concentration Risk [Line Items]
Concentration risk, percentage	1.00%	6.00%
Accounts Receivable	$ 1	$ 51
Accounts Receivable | Customer 2 | LNG
Concentration Risk [Line Items]
Concentration risk, percentage	24.00%	0.00%
Accounts Receivable	$ 1,192	$ 0
Accounts Receivable | Customer 2 | Power Delivery
Concentration Risk [Line Items]
Concentration risk, percentage	18.00%	11.00%
Accounts Receivable	$ 112	$ 103
Accounts Receivable | Customer 3 | Power Delivery
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%
Accounts Receivable	$ 89

X

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

+ References

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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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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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