CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Operating Activities
Net income	$ 8,293,815	$ 10,125,333
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,807,479	3,483,035
Unrecognized pension and postretirement benefits	134,199	(2,197,580)
Loss on restructuring, equipment and other assets	1,727,788	55,823
Provision for doubtful accounts	51,711	211,292
Stock compensation expense	445,338	268,412
Changes in operating assets and liabilities:
Accounts receivable	359,606	(4,116,321)
Inventories	3,217,736	(4,730,310)
Prepaid expenses and other	762,646	(158,549)
Other assets	(589,448)	(6,864)
Accounts payable	(1,815,309)	2,614,554
Accrued compensation	(1,680,668)	(200,967)
Other accrued expenses	(2,202,622)	1,747,682
Net cash provided by operating activities	12,512,271	7,095,540
Investing Activities
Marketable securities	(33,759)	(174,145)
Business acquisition, net of cash acquired	(81,155,753)	(4,994,685)
Capitalized software	0	(1,311,567)
Purchases of property, plant and equipment	(1,896,128)	(2,850,365)
Net cash used in investing activities	(83,085,640)	(9,330,762)
Financing Activities
Proceeds from short term borrowings	0	7,000,000
Payments on revolving credit note	0	(12,000,000)
Proceeds from long-term borrowings	100,000,000	0
Principal payments on long-term debt	(29,009,769)	(1,162,500)
Purchase common stock for the Treasury	0	(315,061)
Dividends paid	(2,058,697)	(2,067,957)
Net cash used in financing activities	68,931,534	(8,545,518)
Effect of exchange rate changes on cash	(300,602)	(323,034)
Net change in cash and cash equivalents	(1,942,437)	(11,103,774)
Cash and cash equivalents at beginning of period	13,925,765	22,275,477
Cash and cash equivalents at end of period	11,983,328	$ 11,171,703
Non-cash investing and financing activities
Right of use asset	10,280,814
Lease liability	$ (10,280,814)