CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	9 Months Ended
	Oct. 03, 2020	Sep. 28, 2019
Operating Activities
Net income	$ 3,991,709	$ 8,293,815
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,144,226	3,807,479
Unrecognized pension and postretirement benefits	(1,066,777)	134,199
Goodwill impairment loss	4,002,548	0
(Gain) loss on sale of equipment and other assets	(414,078)	1,727,788
Provision for doubtful accounts	156,286	51,711
Stock compensation expense	652,232	445,338
Changes in operating assets and liabilities:
Accounts receivable	3,270,585	359,606
Inventories	4,668,705	3,217,736
Prepaid expenses and other	(93,693)	762,646
Other assets	753,170	(589,448)
Accounts payable	(2,600,966)	(1,815,309)
Accrued compensation	(1,262,577)	(1,680,668)
Other accrued expenses	(1,511,729)	(2,202,622)
Net cash provided by operating activities	16,689,641	12,512,271
Investing Activities
Marketable securities	7,741	(33,759)
Business disposition	1,378,602	0
Business acquisition, net of cash acquired	(7,172,868)	(81,155,753)
Proceeds from sale of equipment	445,211	0
Purchases of property, plant and equipment	(1,976,370)	(1,896,128)
Net cash provided by/used in investing activities	(7,317,684)	(83,085,640)
Financing Activities
Proceeds from long-term borrowings	0	100,000,000
Principal payments on long-term debt	(3,846,861)	(29,009,769)
Issuance of Note Receivable	(1,251,943)	0
Payments Received from Note Receivable	54,069	0
Purchase common stock for treasury	(368,864)	0
Dividends paid	(2,058,943)	(2,058,697)
Net cash used in financing activities	(7,472,542)	68,931,534
Effect of exchange rate changes on cash	(344,534)	(300,602)
Net change in cash and cash equivalents	1,554,881	(1,942,437)
Cash and cash equivalents at beginning of period	17,996,505	13,925,765
Cash and cash equivalents at end of period	19,551,386	11,983,328
Non-cash investing and financing activities
Right of use asset	(186,021)	10,280,814
Lease liability	$ 136,619	$ (10,280,814)