Annual report pursuant to Section 13 and 15(d)

Fair Value Measurement - Summary of Assets and Liabilities Measured at Fair Value Recurring and Nonrecurring Basis (Details)

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Fair Value Measurement - Summary of Assets and Liabilities Measured at Fair Value Recurring and Nonrecurring Basis (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Alternative fuel credits $ 476,992 $ 331,120
Marketable securities 3,150,332 2,878,664
Total assets 3,627,324 3,209,784
Warrants payable 5,102 5,965
Total liabilities 5,102 5,965
Level 1 [Member]    
Alternative fuel credits
Marketable securities 3,150,332 2,878,664
Total assets 3,150,332 2,878,664
Warrants payable
Total liabilities
Level 2 [Member]    
Alternative fuel credits 476,992 331,120
Marketable securities
Total assets 476,992 331,120
Warrants payable
Total liabilities
Level 3 [Member]    
Alternative fuel credits
Marketable securities
Total assets
Warrants payable 5,102 5,965
Total liabilities $ 5,102 $ 5,965