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INCOME TAXES (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 28, 2019 | Dec. 29, 2018
Components of Deferred Tax (Assets) and Liabilities [Abstract] |  |
Property, plant and equipment | $ 4,638,141 | $ 2,582,792
Right of Use Asset | 2,933,189 | 0
Intangible assets | 9,236,711 | 4,710,052
Other | 380,336 | 218,710
Foreign Withholding Tax | 315,747 | 540,761
Total deferred income tax liabilities | 17,504,124 | 8,052,315
Other postretirement benefits | (239,348) | (156,710)
Inventories | (1,422,472) | (1,133,427)
Allowance for doubtful accounts | (123,172) | (146,576)
Accrued compensation | (311,125) | (200,232)
Lease Obligation | (2,933,189) | 0
Pensions | (6,804,275) | (6,127,538)
Foreign Tax Credit | (400,078) | (167,826)
Total deferred income tax assets | (12,233,659) | (7,932,309)
Net deferred income tax (assets) liabilities | 5,270,465 | 120,006
Income before income taxes [Abstract] |  |
Domestic | 12,537,168 | 12,431,889
Foreign | 3,668,803 | 5,158,440
Income before income taxes | 16,205,971 | 17,590,329
Current [Abstract] |  |
Federal | 2,783,481 | 484,451
Foreign | 1,001,270 | 753,521
State | 489,921 | 347,199
Deferred [Abstract] |  |
Federal | (756,206) | 815,858
Foreign | (225,014) | 153,726
State | (353,623) | 529,637
Provision for income taxes | 2,939,829 | 3,084,392
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, Amount | 3,403,254 | 3,693,968
State income taxes, net of federal benefit, Amount | 117,276 | 692,698
Impact on Foreign Repatriation Tax Reform, Amount | 0 | (83,479)
Impact of foreign subsidiaries on effective tax rate, Amount | (239,823) | (401,992)
Impact of New Tax Law, Amount | 0 | (507,847)
Impact of Research & Development tax credit, Amount | (411,090) | (216,675)
Impact of manufacturers deduction on effective tax rate, Amount | 0 | 0
Other-net, Amount | 70,212 | (92,281)
Provision for income taxes | $ 2,939,829 | $ 3,084,392
Income taxes using U.S. federal statutory rate, Percent | 21.00% | 21.00%
State income taxes, net of federal benefit, Percent | 1.00% | 4.00%
Impact on Foreign Repatriation Tax Reform, percent | 0 | (0.01)
Impact of foreign subsidiaries on effective tax rate, Percent | (2.00%) | (2.00%)
Impact of New Tax Law, percent | 0 | (0.02)
Impact of Research & Development tax credit, Percent | (3.00%) | (1.00%)
Impact of manufacturers deduction on effective tax rate, Percent | 0.00% | 0.00%
Other-net, Percent | 1.00% | (1.00%)
Effective income tax rate | 18.00% | 18.00%
Total income taxes paid | $ 3,197,984 | $ 3,741,021
Effect of tax cuts and jobs act of 2017 [Abstract] |  |
Undistributed earnings of foreign subsidiaries | 7,460,584 |
Reconciliation of the beginning and ending amount of unrecognized tax benefits [Roll Forward] |  |
Balance at beginning of year | 299,722 | 299,734
Increases for positions taken during the current period | 137,927 | 0
Increases for positions taken during the prior period | 2,039,117 | 74,219
Decreases resulting from the expiration of the statute of limitations | (69,384) | (74,231)
Balance at end of year | 2,407,382 | $ 299,722
Tax Year [Abstract] |  |
Unrecognized tax benefits that would affect the annual effective tax rate | 1,640,609 |
Accrued interest related to unrecognized tax benefits | $ 57,879 |
U.S. Federal [Member] |  |
Tax Year [Abstract] |  |
Open tax year | 2015 |
State and Local Jurisdiction [Member] |  |
Tax Year [Abstract] |  |
Open tax year | 2015 |
Foreign Jurisdiction [Member] |  |
Tax Year [Abstract] |  |
Open tax year | 2013 |

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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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