CONDENSED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 10,571	$ 9,948
Investments	56	56
Trade receivables, less allowance for credit losses of $36 and $11, respectively	1,425	1,309
Inventories, net	2,070	1,964
Other current assets	246	197
Income tax receivable	72	0
Total current assets	14,440	13,474
Deferred income tax asset, net	437	501
Property and equipment, net of accumulated depreciation of $1,708 and $1,664, respectively	860	910
Total assets	15,737	14,885
Current liabilities
Accounts payable	381	146
Accrued expenses	668	365
Accrued income tax	0	41
Total current liabilities	1,049	552
Commitments and contingencies
Stockholders' equity
Common stock par value $0.10 per share; authorized 10,000,000 shares; 3,480,521 and 3,449,021 shares issued and outstanding, respectively	348	344
Additional paid-in capital	2,508	2,360
Retained earnings	11,832	11,629
Total stockholders' equity	14,688	14,333
Total liabilities and stockholders' equity	$ 15,737	$ 14,885