CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016
Operating Activities
Net income	$ 2,983,543	$ 2,735,910
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,536,319	1,849,128
Unrecognized pension and other postretirement benefits	231,005	1,454,353
Loss on sale of equipment and other assets	48,618	39,702
Provision for doubtful accounts	24,866	0
Issuance of Common Stock for directors' fees	81,970	74,561
Changes in operating assets and liabilities:
Accounts receivable	(4,519,266)	(2,318,859)
Inventories	3,249,443	2,864,295
Prepaid expenses and other	(1,636,168)	461,524
Other assets	970,284	(40,364)
Accounts payable	956,626	236,787
Accrued compensation	(822,861)	(877,879)
Other accrued expenses	3,204,161	(399,298)
Net cash provided by operating activities	6,308,540	6,079,860
Investing Activities
Marketable securities	(318,039)	0
Business Acquisition, net of cash acquired	(42,148,000)	0
Purchases of property, plant and equipment	(708,499)	(1,084,325)
Net cash used in investing activities	(43,174,538)	(1,084,325)
Financing Activities
Proceeds from issuance of long-term debt	31,000,000	0
Proceeds from short term borrowings	6,614,611	0
Payments on revolving credit note	(1,614,611)	0
Principal payments on long-term debt	(1,785,714)	(1,071,428)
Dividends paid	(1,376,914)	(1,375,145)
Net cash provided by (used in) financing activities	32,837,372	(2,446,573)
Effect of exchange rate changes on cash	382,052	(117,865)
Net change in cash and cash equivalents	(3,646,574)	2,431,097
Cash and cash equivalents at beginning of period	22,725,376	17,814,986
Cash and cash equivalents at end of period	$ 19,078,802	$ 20,246,083