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Credit Facility (Detail Textuals) - USD ($)
3 Months Ended
Mar. 29, 2019
Feb. 12, 2019
Jun. 30, 2019
Dec. 31, 2019
Mar. 31, 2019
Feb. 28, 2019
Jan. 31, 2019
Mar. 31, 2018
Mar. 30, 2018
Line Of Credit Facility [Line Items]                  
Line of credit facility utilized     $ 149,000,000   $ 145,000,000        
Interest coverage ratio description     The minimum interest coverage ratio to 0.44 to 1.0 for the measurement period ended on December 31, 2019, 0.2 to 1.0 for the measurement period ended January 31, 2019, and 1.0 to 1.0 for the measurement period ended February 28, 2019 and thereafter            
Aggregate amount available under the line of credit   $ 140,000,000              
Minimum interest coverage ratio           1.00% 0.20%    
Scenario, Forecast [Member]                  
Line Of Credit Facility [Line Items]                  
Minimum interest coverage ratio       0.44%          
Minimum                  
Line Of Credit Facility [Line Items]                  
Line of credit facility utilized         140,000,000     $ 140,000,000  
Maximum                  
Line Of Credit Facility [Line Items]                  
Line of credit facility utilized         $ 225,000,000     $ 225,000,000  
Senior Secured Credit Facility                  
Line Of Credit Facility [Line Items]                  
Line of credit facility amount $ 175,000,000                
Debt instrument description of variable rate basis     outstanding advances under the Credit Facility will accrue interest at a rate of LIBOR            
Debt Instrument, Basis Spread on Variable Rate 3.75%                
Commitment period for advances under Credit Facility 3 years                
Amortization period over which outstanding balance of credit facility is paid off 4 years                
Senior Secured Credit Facility | Maximum                  
Line Of Credit Facility [Line Items]                  
Credit Facility available as percentage of value of non-delinquent receivables 82.50%                
Percentage of borrowers obligation under credit agreement 10.00%                
Line of credit facility                  
Line Of Credit Facility [Line Items]                  
Line of credit facility amount                 $ 200,000,000