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Land, Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Land, Property and Equipment
Land, property and equipment, gross	$ 838,529		$ 823,898
Less accumulated depreciation	(502,757)		(492,140)
Total land, property and equipment, net	335,772		331,758
Capitalized software costs, net	37,100		36,800
Accumulated amortization on the capitalized software costs	34,500		34,000
Amortization expense related to the capitalized software costs	500	$ 400
Amount included in accounts payable balances	6,900		10,200
Land
Land, Property and Equipment
Land, property and equipment, gross	10,331		7,397
LNG liquefaction plants
Land, Property and Equipment
Land, property and equipment, gross	96,786		96,786
Station equipment
Land, Property and Equipment
Land, property and equipment, gross	436,851		418,647
Trailers
Land, Property and Equipment
Land, property and equipment, gross	70,742		70,542
Other equipment
Land, Property and Equipment
Land, property and equipment, gross	102,870		105,137
Construction in progress
Land, Property and Equipment
Land, property and equipment, gross	$ 120,949		$ 125,389

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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