Unaudited Condensed Consolidated Statements of Shareholders' Equity (Parentheticals) - shares		3 Months Ended	6 Months Ended
	May 14, 2020	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
WAVI Holding AG and Taurus4757 GmbH Warrants [Member]
Cashless warrant exercises (in shares)	3,871,405	3,871,405	79,100	3,871,405
Cashless warrant exercises (in shares)			79,100