Note 2 - Business Combination - Pro Forma Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	[1]	Dec. 31, 2020
Revenues	$ 7,376		$ 6,386
Net income	$ 46		$ 909

[1] Pro forma net income for the three and nine months ended September 30, 2021 excludes $545,000 extinguishment of debt income recorded in September 2021 due to the SBA's forgiveness of ONTA's PPP Loan.