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Foreign Operations (Details) - USD ($)
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Revenues $ 32,933,949 $ 35,559,160
UNITED STATES    
Revenues 16,327,295 13,722,533
LATVIA    
Revenues 2,677,113 2,480,635
Other European countries    
Revenues 8,664,338 10,826,224
Other Asian countries    
Revenues 1,463,343 1,594,247
Rest of world    
Revenues 1,172,176 1,084,527
CN [Member]    
Revenues $ 2,629,684 $ 5,850,994