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Long-Term Debt and Line-of-Credit - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
Dec. 31, 2019
Oct. 31, 2019
Jun. 30, 2018
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]          
Proceeds from revolving credit facility       $ 4,000,000  
Payment of revolving credit facility       4,000,000  
Remaining principal balance amount paid         $ 1,200,000
JPMorgan Chase Bank, N. A. | Credit Agreement | Term Loan          
Debt Instrument [Line Items]          
Remaining principal balance amount paid     $ 1,000,000    
Prepayment costs     $ 0    
Revolving Credit Facility          
Debt Instrument [Line Items]          
Proceeds from revolving credit facility   $ 4,000,000      
Payment of revolving credit facility $ 1,000,000 $ 3,000,000      
Payments of debt issuance costs       0  
Revolving Credit Facility | JPMorgan Chase Bank, N. A. | Credit Agreement          
Debt Instrument [Line Items]          
Credit facility amount $ 4,000,000     $ 4,000,000  
Credit facility, terminate date       Jun. 30, 2021  
Credit facility, frequency of commitment fee payment       quarterly  
Unused commitment fee percentage       0.50%  
Revolving Credit Facility | JPMorgan Chase Bank, N. A. | Credit Agreement | LIBO Rate          
Debt Instrument [Line Items]          
Debt instrument, variable interest rate       2.50%  
Revolving Credit Facility | JPMorgan Chase Bank, N. A. | Credit Agreement | Floor Rate          
Debt Instrument [Line Items]          
Debt instrument, variable interest rate       2.50%