Unaudited Condensed Consolidated Statements of Shareholders' Equity (Parentheticals) - shares		3 Months Ended
	May 14, 2020	Mar. 31, 2022	Mar. 31, 2021
WAVI Holding AG and Taurus4757 GmbH Warrants [Member]
Cashless warrant exercises (in shares)	3,871,405		79,100
Cashless warrant exercises (in shares)		(0)	79,100