XML 66 R56.htm IDEA: XBRL DOCUMENT v3.21.1
Note 12 - Subsequent Events (Details Textual) - Open Market Sale Agreement [Member] - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
May 05, 2021
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2021
Stock Issued During Period, Shares, New Issues (in shares)   6,654,367 692,651 7,347,018
Proceeds from Issuance of Common Stock   $ 68.9 $ 5.5 $ 74.4
Subsequent Event [Member]        
Stock Issued During Period, Shares, New Issues (in shares) 4,304,541      
Proceeds from Issuance of Common Stock $ 36.3