Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net income	$ 4,180,277	$ 1,032,294
Adjustments to reconcile net income to net cash used in operating activities
Depreciation	960,139	990,983
(Gain) loss on sale of property and equipment	(4,736,096)	21,564
Deferred income taxes	(26,000)	(94,000)
Changes in operating assets and liabilities
Accounts receivable	(930,130)	(911,293)
Inventories	(1,401,692)	(2,591,976)
Other current assets	(75,326)	(7,890)
Accounts payable	204,795	710,141
Accrued wages and salaries	328,698	389,796
Other accrued expenses	1,209,687	34,353
Unearned revenue and customer deposits	(127,094)	(40,959)
Net cash used in operating activities	(412,742)	(466,987)
Cash flows from investing activities
Capital expenditures	(696,073)	(587,615)
Proceeds from the sale of property	5,038,240	7,800
Proceeds from certificates of deposit	1,245,000	4,084,000
Purchases of certificates of deposit	(1,245,000)	(2,092,000)
Net cash provided by investing activities	4,342,167	1,412,185
Cash flows from financing activities
Cash dividends paid	(637,647)	(637,647)
Net cash used in financing activities	(637,647)	(637,647)
Net increase in cash and cash equivalents	3,291,778	307,551
Cash and cash equivalents at beginning of period	2,036,954	2,567,731
Cash and cash equivalents at end of period	$ 5,328,732	$ 2,875,282