Note 20 - Stock Options - Summary of Options Activities 2017 Directors Plan (Details) - Director Plan 2017 [Member] - USD ($)	3 Months Ended	6 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Outstanding. options (in shares)		320,000	240,000	240,000
Outstanding, weighted average exercise price (in dollars per share)		$ 4.27	$ 3.93	$ 3.93
Outstanding, weighted average remaining contractual term (Year)	2 years 11 months 19 days		3 years 2 months 26 days	3 years 2 months 19 days	3 years 9 months
Aggregate intrinsic value outstanding, ending			$ 340	$ 340	$ 48.00
Outstanding, options (in shares)	320,000	320,000	240,000	320,000	240,000
Outstanding, weighted average exercise price (in dollars per share)	$ 4.27	$ 4.27	$ 3.93	$ 4.27	$ 3.93
Aggregate intrinsic value outstanding, ending	$ 2,933	$ 2,933	$ 168.8		$ 340
Exercisable, options (in shares)	320,000	320,000	240,000
Exercisable, weighted average exercise price (in dollars per share)	$ 4.27	$ 4.27	$ 3.93
Exercisable, weighted average remaining contractual term (Year)	2 years 11 months 19 days		3 years 2 months 26 days
Exercisable at December 31, 2021	$ 2,933	$ 2,933	$ 168.8