Note 6 - Instruments and Risk Management	12 Months Ended
Dec. 31, 2022
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	6. INSTRUMENTS AND RISK MANAGEMENT The Company has limited involvement with derivative instruments and does not trade them. Financial instruments held by the Company include warrant liabilities, and financial instruments associated with the Company's Front Line Power seller financed debt and its Syndicated debt. For more information on these financial instruments, see Note 3 Investments and Fair Value Measurements. At December 31, 2022 and 2021, the Company had no derivative instruments designated as effective hedges.

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-URI https://asc.fasb.org/topic&trid=2229140

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
-Subparagraph (f)
-URI https://asc.fasb.org/extlink&oid=126731327&loc=d3e90205-114008

Name:	us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration