Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash, cash equivalents and current portion of restricted cash	$ 79,171	$ 49,222
Short-term investments	16,529	56,929
Accounts receivable, net of allowance of $2,412 and $2,187 as of December 31, 2019 and June 30, 2020, respectively	48,141	61,760
Other receivables	17,363	84,898
Inventory	29,503	29,874
Prepaid expenses and other current assets	11,862	11,109
Derivative assets, related party	2,861
Total current assets	205,430	293,792
Operating lease right-of-use assets	27,254	28,627
Land, property and equipment, net	306,179	323,912
Long-term portion of restricted cash	4,000	4,000
Notes receivable and other long-term assets, net	28,923	31,622
Long-term portion of derivative assets, related party	6,882	3,270
Investments in other entities	25,246	26,305
Goodwill	64,328	64,328
Intangible assets, net	795	1,229
Total assets	669,037	777,085
Current liabilities:
Current portion of debt	6,043	56,013
Current portion of finance lease obligations	745	615
Current portion of operating lease obligations	3,600	3,359
Accounts payable	15,759	27,376
Accrued liabilities	48,148	67,697
Deferred revenue	4,890	7,338
Derivative liabilities, related party		164
Total current liabilities	79,185	162,562
Long-term portion of debt	30,499	32,872
Long-term portion of finance lease obligations	2,908	2,715
Long-term portion of operating lease obligations	24,361	26,206
Other long-term liabilities	4,703	9,701
Total liabilities	141,656	234,056
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. 304,000,000 shares authorized; 204,723,055 shares and 199,506,780 shares issued and outstanding as of December 31, 2019 and June 30, 2020, respectively	20	20
Additional paid-in capital	1,193,197	1,203,186
Accumulated deficit	(673,264)	(668,232)
Accumulated other comprehensive loss	(2,475)	(1,566)
Total Clean Energy Fuels Corp. stockholders' equity	517,478	533,408
Noncontrolling interest in subsidiary	9,903	9,621
Total stockholders' equity	527,381	543,029
Total liabilities and stockholders' equity	$ 669,037	$ 777,085