CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2022	Jan. 01, 2022
Operating Activities
Net income	$ 12,301,918	$ 9,349,171
Less: Gain (loss) from discontinued operations	1,251,457	(6,833,172)
Income from continuing operations	11,050,461	16,182,343
by (used in) operating activities:
Depreciation and amortization	7,235,143	7,241,073
Unrecognized pension and postretirement benefits	(3,575,749)	(4,032,917)
Gain on sale of equipment and other assets	(274,238)	(2,470,339)
Provision for doubtful accounts	207,040	73,097
Stock compensation expense	966,157	1,118,967
Deferred taxes	(3,047,762)	(3,010,111)
Changes in operating assets and liabilities:
Accounts receivable	(1,075,218)	(11,282,090)
Inventories	(5,298,977)	(19,608,565)
Prepaid expenses and other	(293,348)	(3,527,171)
Other assets	193,784	519,478
Accounts payable	(1,741,258)	8,834,545
Accrued compensation	(923,146)	947,171
Other accrued expenses	3,905,457	2,296,052
Net cash provided by (used in) operating activities	7,328,346	(7,757,423)
Investing Activities
Marketable securities	0	28,951
Business disposition	0	2,325
Issuance of notes receivable	(400,000)	(2,500,000)
Payments received from notes receivable	870,771	821,868
Proceeds from sale of businesses	5,814,019	17,030,726
Proceeds from sale of building and equipment	2,171,073	1,980,729
Purchases of property, plant and equipment	(3,365,594)	(3,719,815)
Net cash provided by investing activities	5,090,269	13,644,784
Financing Activities
Proceeds from issuance of long-term debt and notes payable	260,793	0
Proceeds from short term borrowings (revolver)	10,000,000	0
Principal payments on long-term debt	(17,505,501)	(17,274,410)
Financing leases, net	(155,386)	126,797
Purchase common stock for treasury	(1,637,072)	(369,651)
Dividends paid	(2,738,691)	(2,755,686)
Net cash used in financing activities	(11,775,857)	(20,272,950)
Cash provided by (used in) operating activities	3,135,874	5,733,884
Cash used in investing activities	0	(1,022,256)
Cash provided by discontinued operations	3,135,874	4,711,628
Effect of exchange rate changes on cash	(193,540)	174,756
Net change in cash and cash equivalents	3,585,092	(9,499,205)
Cash and cash equivalents at beginning of period	6,602,430	16,101,635
Cash and cash equivalents at end of period ?	10,187,522	6,602,430
Supplemental disclosure of cash flow information:
Interest	2,502,883	2,271,818
Income taxes	3,679,678	2,318,018
Non-cash investing and financing activities
Right of use asset	1,078,986	(1,456,128)
Lease liability	$ (950,518)	$ 1,329,331