Consolidated Statements of Shareholders' Equity (Parentheticals) - shares		12 Months Ended
	May 14, 2020	Dec. 31, 2020	Dec. 31, 2019
WAVI Holding AG and Taurus4757 GmbH Warrants [Member]
Cashless warrant exercises (in shares)	3,871,405	3,871,405
Cashless warrant exercises (in shares)		3,879,905	121,000