Consolidated Statements of Changes in Equity (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Investor Warrants [Member] \| Private Placement [Member]
Proceeds allocated to warrant liabilities	$ 10,476	$ 1,746
Private Placement Agent Costs [Member] \| Private Placement [Member]
Proceeds allocated to warrant liabilities	1,445	305
Investor Costs [Member]
Direct offering costs	3,045	1,055
Cash Offering Costs [Member]
Direct offering costs	1,600	750
Proceeds allocated to warrant liabilities	$ 2,039	$ 1,505

Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

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