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v3.21.2

Common Shares - Equity Financing (Details) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Jul. 12, 2021 USD ($) Y $ / shares shares | Jun. 30, 2020 USD ($) | Sep. 30, 2021 shares | Sep. 30, 2020 USD ($) shares | Sep. 30, 2021 USD ($) security shares | Sep. 30, 2020 USD ($) shares
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  |  |  | $ 13,385,000 | $ 1,436,000
Warrants Not Settleable in Cash, Fair Value Disclosure | $ 2,074,000 |  |  |  |  |
Measurement Input, Option Volatility [Member] |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Warrants and Rights Outstanding, Measurement Input | 70.6 |  |  |  |  |
Measurement Input, Risk Free Interest Rate [Member] |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Warrants and Rights Outstanding, Measurement Input | 0.43 |  |  |  |  |
Measurement Input, Expected Term [Member] |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Warrants and Rights Outstanding, Measurement Input | Y | 3 |  |  |  |  |
Measurement Input, Share Price [Member] |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Warrants and Rights Outstanding, Measurement Input | 0.89 |  |  |  |  |
Capital Units [Member] |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | shares | 12,272,730 |  |  |  |  |
Proceeds from Issuance of Common Stock | $ 12,323,000 |  |  |  |  |
Number Of Shares Converted By Each Unit | shares | 1 |  |  |  |  |
Number Of Shares Converted By Each Warrant | shares | 0.5 |  |  |  |  |
Warrants Issued | shares | 7,408,101 |  |  |  |  |
Class of Warrant or Right, Exercisable Term | 36 months |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares | 1 |  |  |  |  |
Exercise Price Of Warrants Or Rights | $ / shares | $ 1.25 |  |  |  |  |
Common Stock, Fair Value Disclosure | $ 11,426,000 |  |  |  |  |
Underwriter [Member] | Capital Units [Member] |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Warrants Issued | shares | 351,282 |  |  |  |  |
At-The-Market Offering Agreement [Member] | H. C. Wainwright And Co., LLC [Member] |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Threshold of aggregate sales proceeds |  | $ 10,000,000 |  |  |  |
Stock Issued During Period, Shares, New Issues | shares |  |  | 0 | 509,315 | 798,270 | 1,541,134
Proceeds from Issuance of Common Stock |  |  |  | $ 629,000 | $ 871,000 | $ 1,436,000
Offers or sales of common shares under Agreement to be made in Canada | security |  |  |  |  | 0 |
Over-Allotment Option | Underwriter [Member] | Capital Units [Member] |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Warrants Issued | shares | 920,454 |  |  |  |  |

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