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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
3 Months Ended
Mar. 30, 2019
Dec. 29, 2018
Mar. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Financial instrument fair value $ 42,858,925 $ 43,097,888  
Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Financial instrument fair value $ 5,650,099 5,565,499  
Equity Investments      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Payments to acquire an equity investment     $ 1,000,000
Percentage owned of an equity investment 11.00%    
Equity Investments | Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Financial instrument fair value $ 5,650,099 $ 5,565,499  
Equity Investment One | Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Net unrealized gains 84,600    
Equity Investment Two | Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Financial instrument fair value 1,900,000    
Equity Investment One | Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Financial instrument fair value $ 3,700,000