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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS        
Net sales $ 4,843 $ 3,419 $ 10,695 $ 6,893
Cost of goods sold 3,531 2,523 7,824 5,275
Gross profit 1,312 896 2,871 1,618
Operating expenses:        
Research and development 61 65 127 119
Selling and marketing 594 571 1,204 1,115
General and administrative 795 902 1,630 1,565
Total operating expenses 1,450 1,538 2,961 2,799
Operating income (loss) (138) (642) (90) (1,181)
Other (income) expenses:        
Unrealized (gain) loss on investments (269)   (129)  
Realized (gain) loss on investments 110   133  
Interest and other income (25)   (45)  
Interest expense   2   40
Total other (income) expense (184) 2 (41) 40
Net income (loss) $ 46 $ (644) $ (49) $ (1,221)
Weighted average shares outstanding: basic 10,958,398 10,636,278 10,943,561 10,445,482
Weighted average shares outstanding: diluted 10,958,398 10,636,278 10,943,561 10,445,482
Net income (loss) per common share basic $ 0.00 $ (0.06) $ 0.00 $ (0.12)
Net income (loss) per common share diluted $ 0.00 $ (0.06) $ 0.00 $ (0.12)