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Line of Credit (Detail Textuals) - Line of credit facility - USD ($)
$ in Millions
9 Months Ended
Feb. 12, 2019
Dec. 31, 2018
Mar. 30, 2018
Line of Credit Facility [Line Items]      
Line of credit facility amount   $ 225 $ 200
Maturity date   Mar. 31, 2019  
Debt Instrument, Basis Spread on Variable Rate   4.00%  
Debt instrument description of variable rate basis   30-day LIBOR  
Line of credit facility, floor rate   1.00%  
Increased the beneficial ownership limit   30.00%  
Subsequent event      
Line of Credit Facility [Line Items]      
Debt Instrument, Basis Spread on Variable Rate 3.00%    
Debt instrument description of variable rate basis LIBOR plus 4.0    
Interest coverage ratio description The minimum interest coverage ratio requirement to be 0.44 to 1.0 for the measurement period ending December 31, 2018, and 0.20 to 1.0 for the measurement period ending January 31, 2019, and 1.0 to 1.0 for the measurement period ending February 28, 2019 and thereafter    
Aggregate amount available under the line of credit $ 140