Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022
Operating Activities
Net income	$ 8,585,002	$ 12,301,918
Less: Gain from discontinued operations	0	1,251,457
Net income from continuing operations	8,585,002	11,050,461
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,466,483	7,235,143
Reduction in carrying amount of ROU assets	(3,522,981)	(2,918,468)
Change in operating lease liability	3,560,612	3,046,936
Unrecognized pension and postretirement benefits	47,550	(3,575,749)
Loss (gain) on sale of equipment and other assets	1,327,649	(274,238)
Provision for doubtful accounts	62,893	207,040
Stock compensation expense	364,694	966,157
Deferred taxes	(1,124,895)	(3,047,762)
Changes in operating assets and liabilities:
Accounts receivable	5,774,371	(1,075,218)
Inventories	6,024,489	(5,298,977)
Prepaid expenses and other	427,470	(293,348)
Other assets	356,636	193,784
Accounts payable	(2,186,244)	(1,741,258)
Accrued compensation	616,996	(923,146)
Other accrued expenses	(1,298,663)	3,905,457
Net cash provided by operating activities	26,482,062	7,456,814
Investing Activities
Marketable securities	(986,477)	0
Business acquisition	(444,840)	0
Issuance of notes receivable	0	(400,000)
Payments received from notes receivable	2,435,394	870,771
Proceeds from sale of businesses	0	5,814,019
Proceeds from sale of building and equipment	0	2,171,073
Purchases of property, plant and equipment	(6,434,375)	(3,365,594)
Net cash (used in) provided by investing activities	(5,430,298)	5,090,269
Financing Activities
Proceeds from issuance of long-term debt and notes payable	0	260,793
Proceeds from short term borrowings (revolver)	0	10,000,000
Principal payments on short-term borrowings (revolver)	(300,029)	0
Proceeds from new long-term debt refinancing	60,000,000	0
Principal payments on long-term debt	(79,737,707)	(17,505,501)
Financing leases, net	636,927	(283,854)
Purchase common stock for treasury	(735,783)	(1,637,072)
Dividends paid	(2,765,686)	(2,738,691)
Net cash used in financing activities	(22,902,278)	(11,904,325)
Cash provided by operating activities	0	3,135,874
Cash provided by discontinued operations	0	3,135,874
Effect of exchange rate changes on cash	(37,555)	(193,540)
Net change in cash and cash equivalents	(1,888,069)	3,585,092
Cash and cash equivalents at beginning of year	10,187,522	6,602,430
Cash and cash equivalents at end of year	8,299,453	10,187,522
Supplemental disclosure of cash flow information:
Interest	3,388,347	2,502,883
Income taxes	6,608,084	3,679,678
Non-cash investing and financing activities
Right of use asset	5,018,928	1,078,986
Lease liability	$ (4,981,697)	$ (950,518)