CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 827,025	$ 874,266
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	124,212	132,456
Stock-based compensation	279,407	107,355
Provision for uncollectible accounts	32,000	32,514
Provision for sales returns	27,000	96,000
Inventory write-off	232,000	80,000
Provision for accounts receivable discounts	16,419	1,688
Deferred income taxes	122,158	0
Changes in operating assets and liabilities:
Accounts receivable	(1,085,046)	(1,084,999)
Inventory	(2,673,706)	829,199
Prepaid expenses and other assets, net	(302,985)	27,920
Accounts payable	978,534	(1,165,697)
Accrued income taxes	471	494
Accrued expenses and other liabilities	(717,057)	(573,120)
Net cash used in operating activities	(2,139,568)	(641,924)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(398,121)	(101,459)
Payments for intangible assets	0	(12,142)
Net cash used in investing activities	(398,121)	(113,601)
CASH FLOWS FROM FINANCING ACTIVITIES:
Stock option exercises	257,370	0
Net cash provided by financing activities	257,370	0
NET DECREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	(2,280,319)	(755,525)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, BEGINNING OF PERIOD	21,446,951	14,617,234
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH, END OF PERIOD	19,166,632	13,861,709
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	0	2,439
Cash paid during the period for income taxes	$ 0	$ 3,350