Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues:
Total revenues	$ 23,033	$ 17,664
Operating expenses:
Selling, general and administrative expenses	3,566	2,715
Gain from disposal of fixed assets	(80)	0
Depreciation expense	2,322	2,225
Total operating expenses	23,425	17,663
Income (loss) from operations before equity income	(392)	1
Net equity income from foreign joint ventures' operations:
Income from equity investments in foreign joint ventures	161	421
Foreign joint ventures' operations related expenses	(74)	(67)
Net equity income from foreign joint ventures' operations	87	354
Income (loss) from operations	(305)	355
Other income (expense):
Interest expense, net	(154)	(17)
Interest expense, net - related parties	(31)	(173)
Other income (expense)	(45)	90
Total other income (expense)	(230)	(100)
Income (loss) before income tax expense	(535)	255
Income tax expense (benefit)	(129)	80
Net income (loss)	$ (406)	$ 175
Net income (loss) per common share:
Net income (loss) per common share, basic (in usd per share)	$ (0.02)	$ 0.01
Net income (loss) per common share, diluted (in usd per share)	$ (0.02)	$ 0.01
Weighted average number of common shares outstanding:
Weighted average number of common shares outstanding, basic (in shares)	18,191,446	16,896,626
Weighted average number of common shares outstanding, diluted (in shares)	18,191,446	16,896,626
LNG Product
Revenues:
Total revenues	$ 16,785	$ 11,695
Operating expenses:
Cost of revenue	12,744	8,812
Rental, service and other
Revenues:
Total revenues	3,482	4,425
Operating expenses:
Cost of revenue	2,760	2,751
Power delivery
Revenues:
Total revenues	2,766	1,544
Operating expenses:
Cost of revenue	$ 2,113	$ 1,160