CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2018	Jun. 30, 2018
Current assets:
Cash and cash equivalents	$ 2,246,763	$ 1,081,533
Accounts receivable, less allowance for doubtful accounts of $82,787 and $51,854, respectively	3,009,677	4,709,745
Inventories, net	7,185,674	6,138,679
Prepaid expenses and other current assets	266,637	206,776
Income taxes receivable	32,350	32,375
Total current assets	12,741,101	12,169,108
Equipment and leasehold improvements, net	995,874	1,132,105
Other assets:
Operating lease right-of-use assets	2,976,404	3,102,263
Cash surrender value of life insurance	6,522,031	6,374,372
Total other assets	9,498,435	9,476,635
Total assets	23,235,410	22,777,848
Current liabilities:
Accounts payable	1,789,968	1,429,491
Accrued liabilities	637,751	788,961
Deferred revenue	622,959	690,905
Operating lease liability	259,872	254,418
Total current liabilities	3,310,550	3,163,775
Long-term liabilities:
Deferred compensation	2,406,986	2,394,009
Deferred revenue	155,023	168,465
Operating lease liability	2,716,532	2,847,845
Total long-term liabilities	5,278,541	5,410,319
Total liabilities	8,589,091	8,574,094
Stockholders' equity:
Common stock, $0.005 par value, authorized 20,000,000 shares; issued and outstanding 7,404,831 and 7,382,706 shares, respectively	37,024	36,914
Paid in capital	5,993,193	5,752,270
Retained earnings	8,616,102	8,414,570
Total stockholders' equity	14,646,319	14,203,754
Total liabilities and stockholders' equity	$ 23,235,410	$ 22,777,848