v3.6.0.2
VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($)
 12 Months Ended
Jan. 01, 2017
Jan. 03, 2016
Dec. 28, 2014
Valuation And Qualifying Accounts Disclosure Line Items      
Balance at Beginning of Period $ 489,900 $ 16,000  
Additions Charged To Cost And Expense 89,100 543,200 $ 116,000
Valuation Allowances And Reserves Deductions (104,400) (69,300) (100,000)
Balance at End of Period 474,600 489,900 16,000
Allowance For Doubtful Accounts [Member]      
Valuation And Qualifying Accounts Disclosure Line Items      
Balance at Beginning of Period 245,700 214,400 72,500
Additions Charged To Cost And Expense 86,600 295,900 274,100
Valuation Allowances And Reserves Deductions (61,800) (264,600) (132,200)
Balance at End of Period 270,500 245,700 214,400
Business Restructuring Reserves [Member]      
Valuation And Qualifying Accounts Disclosure Line Items      
Balance at End of Period 474,600    
Employee Severance [Member]      
Valuation And Qualifying Accounts Disclosure Line Items      
Balance at Beginning of Period 20,100 360,600 83,300
Additions Charged To Cost And Expense 170,300 221,000 931,100
Valuation Allowances And Reserves Deductions (190,400) (561,500) (653,800)
Balance at End of Period $ 0 $ 20,100 $ 360,600