Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Dec. 31, 2020	May 31, 2020	Dec. 31, 2020
Gross proceeds	$ 22,247	$ 21,996
Issuance costs	$ 1,861	$ 2,618	$ 1
At-the-Market Offering [Member]
Gross proceeds			910
Issuance costs			$ 44

The cash outflow for cost incurred directly with the issuance of an equity security.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

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