CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 563,500	$ 796,100
Investment securities	2,464,300	4,928,700
Trade accounts receivable, less allowance for doubtful accounts of $15,600 at September 30, 2024 and December 31, 2023	1,357,400	1,157,100
Inventories	4,788,300	4,883,900
Income tax receivable	73,600	161,400
Prepaid expenses and other current assets	405,100	413,500
Total current assets	9,652,200	12,340,700
Property and equipment, net	970,500	1,082,300
Goodwill	115,300	115,300
Other intangible assets, net	879,000	1,249,900
Inventories Non Current	597,100	609,000
Operating lease right-of-use assets	1,033,300	1,273,900
Other assets	59,400	59,400
Total assets	13,306,800	16,730,500
Current liabilities:
Accounts payable	615,300	711,700
Accrued expenses	623,600	777,900
Contract liabilities	44,300	23,600
Lease liabilities, current portion	327,300	324,100
Total current liabilities	1,610,500	1,837,300
Lease liabilities, less current portion	761,700	1,007,800
Total liabilities	2,372,200	2,845,100
Shareholders' equity:
Common stock, $0.05 par value; 30,000,000 shares authorized; 10,503,599 and 10,145,211, shares issued and 10,503,599 and 10,145,211, shares outstanding at September 30, 2024 and December 31, 2023	525,200	507,300
Additional paid-in capital	42,322,100	40,844,600
Accumulated other comprehensive gain	87,700	18,600
Accumulated deficit	(32,000,400)	27,485,100
Total shareholders' equity	10,934,600	13,885,400
Total liabilities and shareholders' equity	$ 13,306,800	$ 16,730,500