Land, Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Land, Property and Equipment
Land, property and equipment, gross	$ 696,817		$ 696,817		$ 693,689
Less accumulated depreciation	(447,915)		(447,915)		(431,928)
Total land, property and equipment, net	248,902		248,902		261,761
Capitalized software costs, net	35,000		35,000		33,800
Accumulated amortization on the capitalized software costs	31,700		31,700		30,400
Amortization expense related to the capitalized software costs	700	$ 300	1,300	$ 1,200
Amount included in accounts payable balances			2,900		2,100
Land
Land, Property and Equipment
Land, property and equipment, gross	3,476		3,476		3,476
LNG liquefaction plants
Land, Property and Equipment
Land, property and equipment, gross	94,633		94,633		94,633
Station equipment
Land, Property and Equipment
Land, property and equipment, gross	353,132		353,132		354,699
Trailers
Land, Property and Equipment
Land, property and equipment, gross	73,117		73,117		72,783
Other equipment
Land, Property and Equipment
Land, property and equipment, gross	95,799		95,799		93,135
Construction in progress
Land, Property and Equipment
Land, property and equipment, gross	$ 76,660		$ 76,660		$ 74,963