Note 13 - Equity - Share Repurchase Program (Details) - USD ($)		3 Months Ended																12 Months Ended		14 Months Ended
		Jun. 30, 2022		Mar. 31, 2022		Dec. 31, 2021		Sep. 30, 2021		Jun. 30, 2021		Mar. 31, 2021		Dec. 31, 2020		Sep. 30, 2020		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Total number of shares purchased (in shares)		192,747	[1]	538,376	[1]	244,552	[1]	7,600	[1]	126,927	[1]	84,081	[1]	0	[1]	0	[1]	983,275	211,008	519,786	[1]
Pre-June 30, 2021 (in dollars per share)	[1]	$ 4.78		$ 6.95		$ 5.85		$ 5.43		$ 6.30		$ 6.04		$ 0		$ 0				$ 5.27
Amount available for future share repurchases under the plans or programs		$ 10,817,104																$ 10,817,104
Share Repurchase Program [Member]
Total number of shares purchased (in shares)	[1]	921,331		3,741,477		1,429,697		41,276		799,996		508,243		0		0				2,740,876
Amount available for future share repurchases under the plans or programs	[1]	$ 10,817,104		$ 2,738,435		$ 6,479,912		$ 7,909,609		$ 7,950,885		$ 750,880		$ 1,259,123		$ 1,259,123		$ 10,817,104	$ 7,950,885	$ 1,259,123

[1] We close our books and records on the last calendar day of each month to align our financial closing with our business processes.