CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 57,495	$ 99,448
Short-term investments	130,018	129,722
Accounts receivable, net of allowance of $1,205 and $1,451 as of December 31, 2021 and June 30, 2022, respectively	83,356	87,433
Other receivables	4,750	24,447
Inventory	34,931	31,302
Prepaid expenses and other current assets	67,501	37,584
Total current assets	378,051	409,936
Operating lease right-of-use assets	42,389	42,537
Land, property and equipment, net	253,583	261,761
Restricted cash		7,008
Notes receivable and other long-term assets, net	32,399	56,189
Investments in other entities	157,588	109,811
Goodwill	64,328	64,328
Intangible assets, net	5,915	5,500
Total assets	934,253	957,070
Current liabilities:
Current portion of debt	7,321	12,845
Current portion of finance lease obligations	865	846
Current portion of operating lease obligations	3,712	3,551
Accounts payable	31,753	24,352
Accrued liabilities	69,339	75,159
Deferred revenue	5,926	7,251
Derivative liabilities, related party	7,116	1,900
Total current liabilities	126,032	125,904
Long-term portion of debt	25,089	23,215
Long-term portion of finance lease obligations	2,133	2,427
Long-term portion of operating lease obligations	39,062	39,431
Long-term portion of derivative liabilities, related party	3,918	2,483
Other long-term liabilities	8,513	8,199
Total liabilities	204,747	201,659
Commitments and contingencies (Note 17)
Stockholders' equity:
Preferred stock, $0.0001 par value. 1,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.0001 par value. 454,000,000 shares authorized; 222,684,923 shares and 222,177,172 shares issued and outstanding as of December 31, 2021 and June 30, 2022, respectively	22	22
Additional paid-in capital	1,533,118	1,519,918
Accumulated deficit	(808,668)	(771,242)
Accumulated other comprehensive loss	(2,789)	(1,622)
Total Clean Energy Fuels Corp. stockholders' equity	721,683	747,076
Noncontrolling interest in subsidiary	7,823	8,335
Total stockholders' equity	729,506	755,411
Total liabilities and stockholders' equity	$ 934,253	$ 957,070