Note 9 - Equity (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Schedule of Common Stock Outstanding Roll Forward [Table Text Block]

	Common Stock
Shares outstanding at December 31, 2021		347,233,341
Shares issued pursuant to option exchange and RSU vesting		41,901
Shares outstanding at March 31, 2022		347,275,242