Consolidated Balance Sheets (Parentheticals) - $ / shares $ / shares in Thousands	Dec. 31, 2020	Dec. 31, 2019
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	86,522,569	67,022,568
Common stock, shares outstanding (in shares)	86,522,569	67,022,568