Note 10 - Earn-Out and Warrant Liabilities (Details Textual) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Jul. 26, 2021	Mar. 31, 2022	Dec. 31, 2021	Jul. 01, 2021
Number of Shares Exchangeable at $12.50 (in shares)	1,000,000
Number of Shares Exchangeable at $15.00 (in shares)	1,000,000
Number of Shares Exchangeable at $17.50 (in shares)	1,000,000
Business Combination, Contingent Consideration, Liability, Total		$ 7.1	$ 10.0	$ 29.6
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		3.2
Private Placement Warrant [Member]
Class of Warrant or Right, Outstanding (in shares)				405,000
Warrants and Rights Outstanding, Term (Year)				5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 11.50
Warrants and Rights Outstanding		0.4	$ 0.5	$ 1.4
Fair Value Adjustment of Warrants		$ 0.1