Note 13 - Income Taxes - Provision for Taxes (Details) - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
U.S. operations	$ 425,639	$ 183,025
Foreign operations	137,323	163,989
Total	562,962	347,014
Current:
Federal	274,229	149,239
States	64,861	36,183
Foreign	179,709	188,009
Total current	518,799	373,431
Deferred:
Federal	94,273	(10,572)
States	(7,723)	8,175
Foreign	(42,387)	(24,020)
Total deferred	44,163	(26,417)
Total	$ 562,962	$ 347,014