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Long-Term Debt and Line-of-Credit - Additional Information (Details) - USD ($)
6 Months Ended
Jun. 30, 2016
Jun. 30, 2016
Dec. 31, 2016
Debt Instrument [Line Items]      
Unamortized debt issuance costs $ 75,200 $ 75,200  
Revolving Credit Facility      
Debt Instrument [Line Items]      
Credit facility, frequency of commitment fee payment   quarterly  
Unused commitment fee percentage   0.50%  
Credit Agreement | Scenario, Forecast      
Debt Instrument [Line Items]      
Minimum debt service coverage ratio     125.00%
Maximum funded indebtedness to adjusted EBITDA ratio     300.00%
Prime Rate      
Debt Instrument [Line Items]      
Debt instrument, variable interest rate   3.50%  
JPMorgan Chase Bank, N. A. | Credit Agreement | Revolving Credit Facility      
Debt Instrument [Line Items]      
Debt instrument, effective interest rate 3.46% 3.46%  
Credit facility amount $ 4,000,000 $ 4,000,000  
Credit facility, terminate date   Jun. 30, 2019  
JPMorgan Chase Bank, N. A. | Term Loan | Credit Agreement      
Debt Instrument [Line Items]      
Debt instrument, amount $ 2,400,000 $ 2,400,000  
Debt instrument, periodic payment   quarterly payments  
Debt instrument, term 3 years    
Debt instrument, effective interest rate 4.21% 4.21%  
JPMorgan Chase Bank, N. A. | LIBO Rate | Credit Agreement | Revolving Credit Facility      
Debt Instrument [Line Items]      
Debt instrument, variable interest rate 3.00%    
JPMorgan Chase Bank, N. A. | LIBO Rate | Term Loan | Credit Agreement      
Debt Instrument [Line Items]      
Debt instrument, variable interest rate 3.75%    
JPMorgan Chase Bank, N. A. | Prime Rate | Credit Agreement | Revolving Credit Facility      
Debt Instrument [Line Items]      
Debt instrument, variable interest rate 0.25%    
JPMorgan Chase Bank, N. A. | Prime Rate | Term Loan | Credit Agreement      
Debt Instrument [Line Items]      
Debt instrument, variable interest rate 1.00%    
JPMorgan Chase Bank, N. A. | Floor Rate | Credit Agreement | Revolving Credit Facility      
Debt Instrument [Line Items]      
Debt instrument, variable interest rate 2.50%    
JPMorgan Chase Bank, N. A. | Floor Rate | Term Loan | Credit Agreement      
Debt Instrument [Line Items]      
Debt instrument, variable interest rate 2.50%