Recent Developments, Liquidity and Management's Plans - Summary of Milestone Events Payment (Details) |
3 Months Ended |
|---|---|
Mar. 31, 2021 | |
| Milestone Period One [Member] | |
| Milestone Event | Market capitalization of the Company for at least 10 trading days during any 20 consecutive trading day period during the Milestone Period is equal to or greater than $500 million (the "First Milestone Event"). |
| Milestone Payment | $20 million. |
| Milestone Period Two [Member] | |
| Milestone Event | For every $250 million incremental increase in market capitalization of the Company after the First Milestone Event to the extent such incremental increase occurs for at least 10 trading days during any 20 consecutive trading day period during the Milestone Period, up to a $1 billion market capitalization of the Company. |
| Milestone Payment | $10 million per each incremental increase (it being understood, however, that, if such incremental increase results in market capitalization equal to $1 billion, such $20 million payment in respect of such incremental increase shall be payable without duplication of any amount payable in respect of a Second Milestone Event). |
| Milestone Period Three [Member] | |
| Milestone Event | Market Capitalization of the Company for at least 10 trading days during any 20 consecutive trading day period is equal to or greater than $1 billion (the "Second Milestone Event"). |
| Milestone Payment | $25 million. |
| Milestone Period Four [Member] | |
| Milestone Event | For every $1 billion incremental increase in market capitalization of the Company after the Second Milestone Event to the extent such incremental increase occurs for at least 10 trading days during any 20 consecutive trading day period during the Milestone Period. |
| Milestone Payment | $25 million per each incremental increase. |