Subsequent Events	9 Months Ended
Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	9. Subsequent Events During October 2021, we sold an aggregate of 142,169 shares under the ATM Facility with aggregate net proceeds to us of $1,396,000 after payment of commissions to B. Riley Securities of $43,000. On October 21, 2021, we entered into a placement agency agreement with Pareto Securities Inc. and Pareto Securities AB pursuant to which we sold to certain Swedish and other European investors an aggregate of 1,808,000 shares of our common stock at a price of $7.75 per share in a registered direct offering that closed on October 26, 2021. We received net proceeds of approximately $13.1 million from the Offering after deducting placement agent fees and offering expenses. No other subsequent events have occurred that would require recognition in the condensed consolidated financial statements or disclosure in the notes thereto other than as discussed elsewhere in the accompanying notes.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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