Business Segments (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) segment	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| segment			2
Total revenues	$ 10,514	$ 8,001	$ 34,584	$ 26,566
Operating Income (Loss)	(3,254)	(2,015)	(4,180)	(5,196)
Depreciation	2,307	2,190	6,892	6,573
Income from equity investments in foreign joint ventures	187	0	187	0
Assets	91,448		91,448		$ 74,705
LNG
Segment Reporting Information [Line Items]
Total revenues	9,143	8,001	33,213	26,566
Operating Income (Loss)	(2,988)	(2,015)	(3,914)	(5,196)
Depreciation	2,277	2,190	6,862	6,573
Income from equity investments in foreign joint ventures	0	0	0	0
Assets	77,866		77,866		74,705
Power Delivery
Segment Reporting Information [Line Items]
Total revenues	1,371	0	1,371	0
Operating Income (Loss)	(266)	0	(266)	0
Depreciation	30	0	30	0
Income from equity investments in foreign joint ventures	187	$ 0	187	$ 0
Assets	$ 13,582		$ 13,582		$ 0

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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