CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	9 Months Ended
	Oct. 02, 2021	Oct. 03, 2020
Operating Activities
Net income	$ 7,343,020	$ 3,991,709
Less: Loss from discontinued operations	(4,926,248)	(3,886,914)
Income from continuing operations	12,269,268	7,878,623
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	5,188,863	4,966,934
Unrecognized pension and postretirement benefits	(3,056,642)	(1,066,777)
Gain on sale of equipment and other assets	(1,469,218)	(418,872)
Provision for doubtful accounts	73,097	156,286
Stock compensation expense	1,090,946	652,232
Changes in operating assets and liabilities:
Accounts receivable	(9,553,337)	3,013,523
Inventories	(13,686,268)	3,092,768
Prepaid expenses and other	(3,903,388)	132,623
Other assets	47,534	4,755,718
Accounts payable	11,156,105	(949,971)
Accrued compensation	697,735	(1,191,856)
Other accrued expenses	(2,173,142)	(1,587,475)
Net cash (used in) provided by operating activities	(3,318,447)	19,433,756
Investing Activities
Marketable securities	28,951	7,741
Business disposition	0	(5,994,267)
Issuance of notes receivable	0	(1,251,943)
Payments received from notes receivable	694,962	54,069
Proceeds from sale of equipment	1,980,729	445,212
Purchases of property, plant and equipment	(2,112,990)	(1,531,082)
Net cash provided by (used in) investing activities	591,652	(8,270,270)
Financing Activities
Principal payments on long-term debt	(4,424,757)	(3,846,861)
Financing leases, net	132,221	0
Purchase common stock for treasury	0	(368,864)
Dividends paid	(2,062,492)	(2,058,943)
Net cash used in financing activities	(6,355,028)	(6,274,668)
Cash provided by (used in) operating activities	3,546,530	(2,744,115)
Cash used in investing activities	(794,519)	(245,288)
Cash provided by (used in) discontinued operations	2,752,011	(2,989,403)
Effect of exchange rate changes on cash	239,561	(344,534)
Net change in cash and cash equivalents	(6,090,251)	1,554,881
Cash and cash equivalents at beginning of period	16,101,635	17,996,505
Cash and cash equivalents at end of period ?	10,011,384	19,551,386
Supplemental disclosure of cash flow information:
Interest	1,839,729	2,085,953
Income taxes	866,850	1,453,775
Non-cash investing and financing activities
Right of use asset	(820,561)	(428,510)
Lease liability	$ 688,341	$ 428,510