Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022
Cash flows from operating activities:
Net income	$ 1,230,785	$ 1,862,409
Adjustments to reconcile net income to cash provided by operating activities
Depreciation and amortization	363,308	316,469
Share-based compensation	175,698	207,277
Deferred taxes	423,969	705,755
Changes in:
Accounts receivable-trade	(1,228,476)	(965,717)
Accounts receivable-other	668,625
Inventories	47,944	(956,948)
Prepaid expenses	(126,234)	(20,807)
Accounts payable	314,262	(55,394)
Deferred revenue	(1,045,785)
Accrued expenses	246,437	(220,891)
Net cash provided by operating activities	1,070,533	872,153
Cash flows from investing activities:
Purchases of property and equipment	(567,349)	(392,286)
Net cash provided by (used in) investing activities	(567,349)	(392,286)
Cash flows from financing activities:
Proceeds from employee stock options	41,365	154,724
Stock issuance costs in excess of proceeds	0	(40,893)
Payments on note payable	(32,446)	(45,507)
Net cash provided by financing activities	8,918	68,324
Net increase in cash and cash equivalents	512,103	548,191
Cash and cash equivalents at beginning of period	8,266,753	5,050,312
Cash and cash equivalents at end of period	8,778,856	5,598,503
Supplemental disclosures of cash flows information:
Cash paid for income taxes	109,456	456
Cash paid for interest	4,130	6,243
Supplemental disclosures of non-cash activity:
Share repurchases as a reduction of stock option exercise proceeds	$ 209,290	$ 18,334