CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
Operating Activities
Net income	$ 1,007,036	$ 4,100,733
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,050,250	2,391,314
Unrecognized pension and postretirement benefits	(962,094)	448,214
Goodwill impairment loss	4,002,548	0
(Gain) loss on sale of equipment and other assets	(420,536)	2,208,740
Provision for doubtful accounts	156,286	43,420
Stock compensation expense	448,669	293,726
Changes in operating assets and liabilities:
Accounts receivable	3,408,873	(1,794,182)
Inventories	(2,330,448)	3,618,303
Prepaid expenses and other	616,300	(21,533)
Other assets	734,790	709,357
Accounts payable	(730,055)	(89,081)
Accrued compensation	(1,697,444)	(1,307,966)
Other accrued expenses	(927,178)	(1,893,440)
Net cash provided by operating activities	7,356,997	8,707,605
Investing Activities
Marketable securities	8,389	(23,136)
Business disposition	1,378,602	0
Proceeds from sale of equipment	445,212	0
Purchases of property, plant and equipment	(1,183,419)	(1,261,942)
Net cash provided by/used in investing activities	648,784	(1,285,078)
Financing Activities
Principal payments on long-term debt	(2,622,745)	(6,275,000)
Note Receivable	(1,251,943)
Purchase common stock for treasury	(368,864)
Dividends paid	(1,372,673)	(1,373,700)
Net cash used in financing activities	(5,616,225)	(7,648,700)
Effect of exchange rate changes on cash	(400,006)	(31,690)
Net change in cash and cash equivalents	1,989,550	(257,863)
Cash and cash equivalents at beginning of period	17,996,505	13,925,765
Cash and cash equivalents at end of period	19,986,055	$ 13,667,902
Non-cash investing and financing activities
Right of use asset	(957,712)
Lease liability	$ 957,712