v3.20.1

Long-Term Debt (Details) - USD ($) |  |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 06, 2020 | Dec. 09, 2019 | Dec. 31, 2018 | Jul. 06, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Nov. 28, 2018 | Oct. 01, 2018 | Aug. 14, 2018
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Redemption percentage |  |  |  |  | 12.00% |  |  |  |
Debt conversion, interest rate |  |  |  |  |  | 7.625% |  |  |
Interest rate |  |  | 10.40% |  |  | 10.40% |  |  |
Additional warrant issuances, percentage |  |  |  |  |  | 10.00% |  |  |
Exercise price, percentage |  |  |  |  |  | 110.00% |  |  |
Warrant liability |  |  | $ 965,747 |  | $ 16,335,000 | $ 965,747 |  |  |
Reclassification of warrants to equity |  |  |  |  | 857,072 |  |  |  |
Marathon Tranche One Loan |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount |  |  | 10,000,000 |  |  | 10,000,000 |  |  |
Loss on extinguishment of debt |  |  |  |  | 6,100,000 |  |  |  |
Premium payable on early payoff of debt |  |  |  |  | 3,400,000 |  |  |  |
Revolving Loan |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 25,000,000 |  |  | $ 25,000,000 |  |  |
Arosa |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Warrants to purchase of common stock shares |  |  | 894,821 |  |  |  |  |  |
Warrant exercise price (in usd per share) |  |  | $ 1.25 |  |  | $ 1.25 | $ 1.25 |  |
Additional warrant issuances, percentage |  |  |  |  |  | 10.00% |  |  |
Loss on extinguishment of debt |  |  |  |  |  | $ 2,200,000 |  |  |
Senior Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Amortization of debt issuance costs |  |  |  |  | $ 1,922,164 | $ 2,348,289 |  |  |
Convertible Notes |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Redemption percentage |  |  |  |  | 112.00% |  |  |  |
Convertible debt |  |  |  |  | $ 500,000 |  |  |  |
Face amount |  | $ 41,000,000.0 |  |  |  |  |  |  |
Interest rate |  | 4.50% |  |  |  |  |  |  |
Convertible debt, fair value |  | $ 38,500,000 |  |  | $ 39,000,000.0 |  |  |  |
Debt issuance price, percentage |  |  |  |  | 95.00% |  |  |  |
Conversion price |  |  |  |  | $ 3.05 |  |  |  |
Debt instrument, minimum convertible amount |  |  |  |  | $ 5,000,000.0 |  |  |  |
Convertible debt, shares issued on conversion |  |  |  |  | 185,186 |  |  |  |
Convertible debt, outstanding principal |  |  |  |  | $ 40,500,000 |  |  |  |
Change in fair value |  |  |  |  | 1,000,000.0 |  |  |  |
Periodic debt payment |  |  |  |  | $ 1,500,000 |  |  |  |
Debt instrument, covenant terms, liquidity requirements, cash and cash equivalents |  | $ 8,000,000.0 |  |  |  |  |  |  |
Warrants to purchase of common stock shares |  | 15,459,016 |  |  |  |  |  |  |
Common stock price, weighted average period |  |  |  |  | 30 days |  |  |  |
Warrant exercise price (in usd per share) |  | $ 3.05 |  |  |  |  |  |  |
Carrying amount of equity component, convertible debt |  | $ 400,000 |  |  |  |  |  |  |
Convertible Notes | Interest Expense |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Convertible debt, gain on conversion |  |  |  |  | $ 83,089 |  |  |  |
Convertible Notes | Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Convertible debt | $ 4,500,000 |  |  |  |  |  |  |  |
Convertible debt, shares issued on conversion | 1,546,889 |  |  |  |  |  |  |  |
Credit Agreement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Warrants to purchase of common stock shares |  |  |  |  |  | 8,053,390 |  |  |
Warrant exercise price (in usd per share) |  |  | $ 1.25 |  |  | $ 1.25 |  |  |
Fair Value adjustment of warrants |  |  |  |  |  | $ 965,747 |  |  |
Credit Agreement | Tranche 1 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Unamortized discount |  |  | $ 722,174 |  |  | 722,174 |  |  |
Credit Agreement | Tranche 2 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fair Value adjustment of warrants |  |  |  |  |  | 69,744 |  |  |
Prepaid expense and other assets |  |  | $ 1,830,435 |  |  | $ 1,830,435 |  |  |
Loan Agreement |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount |  |  |  | $ 7,800,000 |  |  |  |  |
Interest rate |  |  |  | 8.00% |  |  |  |  |
Warrants to purchase of common stock shares |  |  |  | 5,000,358 |  |  |  |  |
Warrant exercise price (in usd per share) |  |  |  | $ 2.00 |  |  |  | $ 1.60 | $ 1.21
Debt instrument term |  |  |  | 5 years |  |  |  |  |
Class of warrant or right outstanding |  |  |  |  |  |  |  | 108,768 | 1,143,200
Loan Agreement | Arosa |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fair Value adjustment of warrants |  |  |  | $ 3,540,542 |  |  |  |  |

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