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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions | Dec. 31, 2020 | Jun. 08, 2020 | Feb. 19, 2020 | Feb. 10, 2020 | Jan. 27, 2020 | Dec. 31, 2019 | Dec. 06, 2019
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$5.0 Million Convertible Debentures [Member] |  |  |  |  |  |  |
Supplemental Cash Flow Information [Abstract] |  |  |  |  |  |  |
Face amount | $ 5.0 | $ 5.0 | $ 1.5 | $ 1.5 | $ 2.0 |  |
$7.5 Million Bridge Loan [Member] |  |  |  |  |  |  |
Supplemental Cash Flow Information [Abstract] |  |  |  |  |  |  |
Face amount |  |  |  |  |  | $ 7.5 | $ 7.5

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