Note 5 - Debt (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Interest Expense Disclosure [Table Text Block]

	2021		2020
GRA Note	$	633	$	1,727
PPP Loan		653		1,203
Insurance premium financing costs		-		1,743
Convertible debentures (including $124,185 of debt discount amortization)		-		138,851
Total interest expense	$	1,286	$	143,524