INCOME TAXES (Details) (USD $)	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Components of Deferred Tax Assets and Liabilities [Abstract]
Property, plant and equipment	$ 6,503,597	$ 6,184,873	$ 5,942,048
Other	92,531	208,938	0
Total deferred income tax liabilities	6,596,128	6,393,811	5,942,048
Other postretirement benefits	(1,030,203)	(787,087)	(885,729)
Inventories	(829,876)	(848,364)	(761,613)
Allowance for doubtful accounts	(105,296)	(104,695)	(104,903)
Intangible assets	(396,541)	(373,482)	(422,443)
Accrued compensation	(203,180)	(158,866)	(197,582)
Pensions	(9,275,949)	(3,828,224)	(7,128,057)
Other	0	0	(116,826)
Total deferred income tax assets	(11,841,045)	(6,100,718)	(9,617,153)
Net deferred income tax (assets) liabilities	(5,244,917)	293,093	(3,675,105)
Income before income taxes [Abstract]
Domestic	8,087,552	7,139,039	8,614,664
Foreign	3,441,211	2,974,856	4,609,854
Income before income taxes	11,528,763	10,113,895	13,224,518
Current:
Federal	2,339,917	1,942,271	1,909,172
Foreign	991,257	871,949	1,367,025
State	295,554	162,952	220,820
Deferred:
Federal	164,830	241,821	1,022,660
Foreign	0	0	0
State	75,729	(7,019)	79,041
Provision for income taxes	3,867,287	3,211,974	4,598,718
Reconciliation of income taxes computed using U.S. federal statutory rate to that reflected in operations [Abstract]
Income taxes using U.S. federal statutory rate	3,919,779	3,438,724	4,496,336
State income taxes, net of federal benefit	249,324	99,245	188,490
Impact of foreign subsidiaries on effective tax rate	(76,914)	(103,878)	136,590
Impact of manufacturers deduction on effective tax rate	(185,993)	(138,127)	(232,928)
Other-net	(38,909)	(83,990)	10,230
Provision for income taxes	3,867,287	3,211,974	4,598,718
Income taxes using U.S. federal statutory rate (in hundredths)	34.00%	34.00%	34.00%
State income taxes, net of federal benefit (in hundredths)	2.00%	1.00%	2.00%
Impact of foreign subsidiaries on effective tax rate (in hundredths)	(1.00%)	(1.00%)	1.00%
Impact of manufacturers deduction on effective tax rate (in hundredths)	(1.00%)	(1.00%)	(2.00%)
Other-net (in hundredths)	0.00%	(1.00%)	0.00%
Effective income tax rate (in hundredths)	34.00%	32.00%	35.00%
Total income taxes paid	3,989,978	2,568,708	3,350,283
Undistributed earnings of foreign subsidiaries	13,656,236
Tax benefit from exercise of non-qualified stock options and disqualifying dispositions of incentive stock options	8,882	0	0
Reconciliation of the beginning and ending amount of unrecognized tax benefits [Roll Forward]
Balance at beginning of year	220,289	499,624	486,332
Increases for positions taken during the current period	50,735	49,636	119,893
Decreases relating to settlements	0	(263,856)	0
Decreases resulting from the expiration of the statute of limitations	(22,379)	(65,115)	(106,601)
Balance at end of year	248,645	220,289	499,624
Income Tax Contingency [Line Items]
Unrecognized tax benefits that would affect the annual effective tax rate	164,106
Accrued interest related to unrecognized tax benefits	$ 33,000
U.S. federal [Member]
Income Tax Contingency [Line Items]
Open tax year	2011
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Open tax year	2011
Foreign Jurisdiction [Member]
Income Tax Contingency [Line Items]
Open tax year	2008