Note 13 - Redeemable Preferred Shares (Details Textual) - USD ($) $ / shares in Units, $ in Millions	Aug. 08, 2022	Jan. 30, 2023	Dec. 31, 2022	Dec. 05, 2022
Unit Purchase Agreement, Preferred Units Issued (in shares)				4,583,333
Unit Purchase Agreement, Price Per Unit (in dollars per share)				$ 6.00
Unit Purchase Agreement, Capital upon the Initial Funding				$ 27.5
Unit Purchase Agreement, Additional Capital Commitments			$ 112.5
Series A Preferred Units [Member]
Unit Purchase Agreement, Preferred Units Issued (in shares)	10,000,000
Unit Purchase Agreement, Price Per Unit (in dollars per share)	$ 6.00
Unit Purchase Agreement, Aggregate Additional Preferred Units (in shares)	23,333,333.34
Unit Purchase Agreement, Capital upon the Initial Funding	$ 60.0
Unit Purchase Agreement, Additional Capital Commitments	140.0
Unit Purchase Agreement, Payment Pursuant to Milestone Fundings	$ 140.0
Unit Purchase Agreement, Milestone Fundings, Standby Fee Rate	0.50%
Preferred Stock, Dividend Rate, Percentage	15.00%
Unit Purchase Agreement, Accretion Expense on the Redeemable Preferred Shares			3.9
Legal Fees	$ 0.8
Preferred Stock, Liquidation Preference, Value			$ 87.5
Series A Preferred Units [Member] | Subsequent Event [Member]
Unit Purchase Agreement, Preferred Units Issued (in shares)		5,000,000
Unit Purchase Agreement, Price Per Unit (in dollars per share)		$ 6.00
Unit Purchase Agreement, Capital upon the Initial Funding		$ 30.0
Series A Preferred Units [Member] | Minimum [Member]
Preferred Stock, Dividend Rate, Percentage	13.00%
Series A Preferred Units [Member] | Maximum [Member]
Preferred Stock, Dividend Rate, Percentage	17.00%