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Credit Facility (Detail Textuals) - USD ($)
12 Months Ended
May 27, 2020
Mar. 29, 2019
Mar. 31, 2021
Mar. 31, 2020
Line Of Credit Facility [Line Items]        
Aggregate outstanding indebtedness     $ 88,300,000  
Paycheck Protection Program        
Line Of Credit Facility [Line Items]        
Proceeds from Loans $ 3,243,900      
Loan interest rate 1.00%      
Loan maturity date May 22, 2022      
Prepayment penalties upon early repayment $ 0      
Senior Secured Credit Facility        
Line Of Credit Facility [Line Items]        
Line of credit facility amount   $ 175,000,000    
Aggregate outstanding indebtedness     88,300,000 $ 126,800,000
Debt issuance costs     $ 2,100,000 $ 2,600,000
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%