Annual report pursuant to Section 13 and 15(d)

LOANS - Narrative (Details)

v3.10.0.1
LOANS - Narrative (Details)
3 Months Ended 12 Months Ended
Jun. 30, 2017
USD ($)
Dec. 31, 2018
USD ($)
loan
payment
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Debt Instrument [Line Items]        
Short-term debt   $ 5,500,416 $ 5,092,088  
Land and building purchased $ 2,150,000 $ 1,774,166 4,824,493 $ 1,555,788
Debt covenant, maximum debt to EBITDA ratio allowed   3.00    
Debt covenant, minimum fixed charge coverage ratio allowed   1.20    
Revolving Credit Facility        
Debt Instrument [Line Items]        
Debt instrument, interest rate, effective percentage   5.50%    
Line of Credit | Revolving Credit Facility        
Debt Instrument [Line Items]        
Line of credit facility, maximum borrowing capacity   $ 15,000,000    
Mortgages        
Debt Instrument [Line Items]        
Number of mortgage loans | loan   2    
Term Loan A        
Debt Instrument [Line Items]        
Debt instrument, face amount   $ 10,000,000    
Debt instrument, interest rate, effective percentage   5.75%    
Debt instrument, payment terms   The repayment of Term Loan A consists of 60 consecutive monthly payments of principal plus accrued interest based on annual principal reductions of 10% during the first year, 20% during the second through fourth years, and 30% during the fifth year.    
Number of consecutive monthly payments | payment   60    
Principal reduction, year 1   10.00%    
Principal reduction, year 2   20.00%    
Principal reduction, year 3   20.00%    
Principal reduction, year 4   20.00%    
Principal reduction, year 5   30.00%    
Other long-term debt, noncurrent   $ 5,656,291 7,656,291  
Term Loan B and C        
Debt Instrument [Line Items]        
Other long-term debt, noncurrent   2,844,327    
Term Loan B        
Debt Instrument [Line Items]        
Other long-term debt, noncurrent     $ 2,998,791  
Debt instrument, periodic payment   7,212    
Term Loan B | Mortgages        
Debt Instrument [Line Items]        
Debt instrument, face amount   1,358,000    
Term Loan C        
Debt Instrument [Line Items]        
Debt instrument, periodic payment   5,660    
Term Loan C | Mortgages        
Debt Instrument [Line Items]        
Debt instrument, face amount   $ 1,730,895    
Minimum | LIBOR | Revolving Credit Facility        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   1.75%    
Minimum | LIBOR | Term Loan A        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   2.00%    
Maximum | LIBOR | Revolving Credit Facility        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   3.00%    
Maximum | LIBOR | Term Loan A        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   3.25%