Note 8 - Equity Offerings (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Sales Under Sales Agency Agreement [Table Text Block]

	For the Six Months Ended June 30, 2021
Total shares of common stock sold		19,120,037
Average price per share	$	1.47
Gross proceeds	$	28,100
Commissions earned by Cantor	$	843
Net proceeds	$	27,257

	For the Six Months Ended June 30, 2021
Total shares of common stock sold		331,811
Average price per share	$	3.47
Gross proceeds	$	1,152
Commissions earned by Agents	$	34
Net proceeds	$	1,118