Debt

12 Months Ended

Dec. 31, 2023

Debt Disclosure [Abstract]

Debt Disclosure [Text Block]

Convertible Debt

On April 17, 2023, the Company entered into a Securities Purchase Agreement (the “LDA Purchase Agreement”) pursuant to which the Company issued to an investor, LDA Capital Limited (the “Investor”), a senior convertible promissory note having an aggregate principal amount of $1.0 million (the “LDA Note”), as amended April 25, 2023, and a common share purchase warrant (the “LDA Warrant”) to purchase up to 455,927 common shares of the Company (the “LDA Warrant Shares”). The Company received proceeds of approximately $0.8 million, which were net of fees associated with the transaction, on April 18, 2023 (the “Closing Date”). The LDA Note matures 24 months after issuance, bears interest at a rate of 7.5% per annum and is convertible into the Company's common shares (the “Conversion Shares”), at the Investor's election, at an initial conversion price equal to the greater of (i) $2.0832 per share, or (ii) 85% of the VWAPS (as defined in the LDA Note) during the trading five days prior to delivery of a conversion notice by the Investor, subject to adjustment for certain stock splits, stock combinations and dilutive share issuances.

On August 14, 2023, in accordance with the terms of the LDA Purchase Agreement prepayment option, the Company repaid the full amount of the LDA Note, including interest and fees, in the amount of $1.3 million. As a result of the repayment, the Company redeemed from the holder of the LDA Warrant 40% of the then outstanding LDA Warrant, or 182,371 LDA Warrant Shares. At December 31, 2023, the balance of the LDA Note was nil. The Company recognized a loss on debt extinguishment of $63,000 which is included in the consolidated statement of operations in interest income and other expense, net.

The LDA Warrant is exercisable at an initial exercise price of $3.29 per share and expires three years from the date of issuance or earlier if the closing of a Fundamental Transaction occurs (defined as merger or consolidation, any sale of substantially all of the Company’s assets, any tender offer or exchange offer pursuant to which common shareholders can tender or exchange their shares for other securities, cash or property, as well as any reclassification of common shares into other securities, cash or property). On the date that is six months from the date of issuance of the LDA Warrant, the exercise price will be adjusted to the lower of (i) $3.29, and (ii) a price equal to 110% of the average of the VWAPS (as defined in the LDA Warrant) of the Company's common shares over five days of trading preceding such date. Additionally, the exercise price of the LDA Warrant is subject to adjustment for certain stock splits, stock combinations and dilutive share issuances. Pursuant to the terms of the LDA Purchase Agreement, the Company will reserve for issuance 200% of the maximum aggregate number of common shares as are issuable upon repayment or conversion in full of the LDA Note and exercise in full of the LDA Warrant at any time. In October 2023, the Company adjusted the LDA Warrant exercise price from $3.29 to $1.342 pursuant to the terms in the LDA Purchase Agreement.

On December 29, 2023, the Company issued 123,806 common shares with a value of $0.4 million for a cashless exercise of 200,000 LDA Warrant Shares.

The LDA Warrant contains a contingent put option. In the event of a Fundamental Transaction, the Investor may, at the Investor’s option, require the Company to purchase the LDA Warrant for an amount of cash equal to the Black Scholes value of the remaining unexercised portion of the warrant on the date of consummation of such Fundamental Transaction. The Company has recorded the warrant as a liability and will adjust the warrant liability to fair value each reporting period until settled.

On April 17, 2023, upon issuance of the LDA Note and LDA Warrant, which are accounted for as freestanding financial instruments, the Company determined that the aggregate fair value of $2.0 million for the instruments issued exceeds the net proceeds received under the transaction. Accordingly, the excess of the fair value over the proceeds received of $1.0 million was recognized as interest expense. The initial fair value of the LDA Warrant was measured using a Monte Carlo valuation model and at December 31, 2023 using a Black Scholes valuation model with the following assumptions, respectively:

	April 17, 2023			December 31, 2023
Common share price	$	2.98		$	3.47
Expected volatility	120.0		%	120.0		%
Risk-free interest rate	3.8		%	4.2		%