CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income (loss)	$ 13,259	$ (9,183)	$ (81,391)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments net of $0 tax in 2017, 2018 and 2019	505	(1,305)	(113)
Unrealized gains on available-for-sale securities, net of $0 tax in 2017, 2018 and 2019	67	54	189
Release of foreign currency translation adjustments on contribution of subsidiary into equity method investment			16,712
Total other comprehensive income (loss)	572	(1,251)	16,788
Comprehensive income (loss)	13,831	(10,434)	(64,603)
Clean Energy Fuels Corp.
Net income (loss)	20,421	(3,790)	(79,237)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments net of $0 tax in 2017, 2018 and 2019	505	(1,305)	(113)
Unrealized gains on available-for-sale securities, net of $0 tax in 2017, 2018 and 2019	67	54	189
Release of foreign currency translation adjustments on contribution of subsidiary into equity method investment			16,712
Total other comprehensive income (loss)	572	(1,251)	16,788
Comprehensive income (loss)	20,993	(5,041)	(62,449)
Noncontrolling Interest in Subsidiary
Net income (loss)	(7,162)	(5,393)	(2,154)
Other comprehensive income (loss), net of tax:
Comprehensive income (loss)	$ (7,162)	$ (5,393)	$ (2,154)