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Consolidated Balance Sheets - USD ($)
Jun. 30, 2021
Jun. 30, 2020
Current assets:    
Cash and cash equivalents $ 6,950,215 $ 3,999,409
Accounts receivable, less allowance for doubtful accounts of $41,500 and $74,082, respectively 2,240,785 2,317,064
Inventories 5,901,512 5,538,794
Prepaid expenses and other current assets 456,004 267,647
Income taxes receivable   14,622
Total current assets 15,548,516 12,137,536
Equipment and leasehold improvements, net 1,281,180 983,641
Other assets:    
Operating lease right-of-use assets 2,305,455 2,582,402
Cash surrender value of life insurance 7,188,994 6,876,827
Total other assets 9,494,449 9,459,229
Total assets 26,324,145 22,580,406
Current liabilities:    
Accounts payable 398,433 827,705
Accrued liabilities 665,567 580,099
Deferred revenue 694,632 423,639
Operating lease liability 288,949 276,947
Income taxes payable 4,543  
Short-term debt   506,700
Total current liabilities 2,052,124 2,615,090
Long-term liabilities:    
Deferred compensation 2,491,482 2,333,482
Deferred revenue 188,932 170,281
Operating lease liability 2,016,506 2,305,455
Total long-term liabilities 4,696,920 4,809,218
Total liabilities 6,749,044 7,424,308
Stockholders' equity:    
Common stock, $0.005 par value, authorized 20,000,000 shares; issued and outstanding 8,608,706 and 7,404,831 shares, respectively 43,044 37,024
Paid in capital 10,802,118 6,882,729
Retained earnings 8,729,939 8,236,345
Total stockholders' equity 19,575,101 15,156,098
Total liabilities and stockholders' equity $ 26,324,145 $ 22,580,406