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Long-term debt and Finance Lease Obligations - Additional Information (Detail) - USD ($)
12 Months Ended
Apr. 24, 2017
Dec. 06, 2015
Dec. 31, 2018
Dec. 31, 2019
Dec. 30, 2019
Apr. 01, 2018
Mar. 01, 2018
Property Subject to or Available for Operating Lease [Line Items]              
Debt Instrument, Outstanding balance     $ 5,817,308        
Capital lease obligations, Equipment     651,000 $ 651,000      
Long term debt current     352,560 6,953,178      
Unamortized finance costs     29,354 11,566      
Long term debt noncurrent     5,435,394 0      
Line of credit outstanding     $ 0 $ 1,500,000      
Revolving Credit Facility [Member]              
Property Subject to or Available for Operating Lease [Line Items]              
Debt Instrument, Basis spread on variable rate 3.00%            
Debt Instrument, Effective rate       4.75%      
Line of Credit Facility, Maximum borrowing capacity $ 1,500,000            
Line of Credit Facility, Expiration date     Dec. 06, 2020        
Line of Credit Facility, Interest rate description     Amounts borrowed under the revolving line of credit will bear interest at 3% over the one month LIBOR index.        
Capital Lease 5 [Member] | Equipment [Member]              
Property Subject to or Available for Operating Lease [Line Items]              
Capital lease obligations, Equipment         $ 222,694   $ 332,206
Capital lease obligations, Expiration     2023-02        
Capital lease obligations, Monthly payments             $ 6,500
Capital lease obligations, Interest rate             6.50%
Capital lease obligations, Frequency of periodic payment     monthly        
Capital lease obligations, Cost of leased assets             $ 461,506
Capital lease obligations, Value of Company's trade-in of existing equipment             $ 129,300
Capital Lease 6 [Member] | Equipment [Member]              
Property Subject to or Available for Operating Lease [Line Items]              
Capital lease obligations, Equipment       $ 107,693   $ 156,942  
Capital lease obligations, Expiration     2023-03        
Capital lease obligations, Monthly payments           $ 3,071  
Capital lease obligations, Interest rate           6.50%  
Capital lease obligations, Frequency of periodic payment     monthly        
Capital lease obligations, Cost of leased assets           $ 178,942  
Capital lease obligations, Value of Company's trade-in of existing equipment           $ 22,000  
Term Note [Member] | Notes Payable To Third Parties [Member]              
Property Subject to or Available for Operating Lease [Line Items]              
Debt Instrument, Principal balance   $ 4,875,000          
Debt Instrument, Advance of additional borrowings   2,000,000          
Debt Instrument, Expiration date     Dec. 06, 2020        
Debt Instrument, Outstanding balance       $ 5,464,744      
Debt Instrument, Monthly principal payment   $ 29,380          
Debt Instrument, Basis spread on variable rate   3.00%          
Debt Instrument, Effective rate       4.75%      
Debt Instrument, Interest rate term description     3% over the one month Libor index (5.38% at December 31, 2018)        
Debt Instrument, Debt service ratio   1.25%          
Debt Instrument, Debt service ratio description     The term note requires the Company to maintain a Debt Service Ratio, as defined, of 1.25%