Quarterly report pursuant to Section 13 or 15(d)

Long-term Debt (Details Textual)

v3.19.3
Long-term Debt (Details Textual) - USD ($)
9 Months Ended
Feb. 02, 2017
Sep. 29, 2019
Sep. 18, 2019
Long-term Debt, Weighted Average Interest Rate, at Point in Time   3.70%  
Amended Credit Agreement [Member] | Wells Fargo Bank, National Association and Other Lenders [Member]      
Debt Instrument, Maturity Date Feb. 02, 2022    
Senior Credit Facility [Member]      
Long-term Line of Credit   $ 83,000,000.0  
Line of Credit Facility, Remaining Borrowing Capacity   $ 32,500,000  
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage   0.30%  
Letter of Credit [Member]      
Letters of Credit Outstanding, Amount   $ 4,500,000  
Long-term Debt, Weighted Average Interest Rate, at Point in Time   1.90%  
Letter of Credit [Member] | Amended Credit Agreement [Member] | Wells Fargo Bank, National Association and Other Lenders [Member]      
Line of Credit Facility, Maximum Borrowing Capacity $ 5,000,000.0    
Letter of Credit [Member] | First Amendment to Credit Agreement [Member] | Wells Fargo Bank, National Association and Other Lenders [Member]      
Line of Credit Facility, Maximum Borrowing Capacity     $ 5,000,000.0
Revolving Credit Facility [Member] | Amended Credit Agreement [Member] | Wells Fargo Bank, National Association and Other Lenders [Member]      
Line of Credit Facility, Maximum Borrowing Capacity 90,000,000.0    
Line of Credit Facility, Maximum Borrowing Capacity upon Satisfaction of Certain Conditions $ 150,000,000.0    
Revolving Credit Facility [Member] | First Amendment to Credit Agreement [Member] | Wells Fargo Bank, National Association and Other Lenders [Member]      
Line of Credit Facility, Maximum Borrowing Capacity     120,000,000.0
Line of Credit Facility, Maximum Borrowing Capacity upon Satisfaction of Certain Conditions     150,000,000.0
Revolving Credit Facility [Member] | Federal Funds Rate [Member] | Amended Credit Agreement [Member]      
Debt Instrument, Basis Spread on Variable Rate 0.50%    
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Amended Credit Agreement [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.00%    
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Amended Credit Agreement [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.50%    
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Amended Credit Agreement [Member]      
Debt Instrument, Basis Spread on Variable Rate 2.25%    
Revolving Credit Facility [Member] | Base [Member] | Minimum [Member] | Amended Credit Agreement [Member]      
Debt Instrument, Basis Spread on Variable Rate 0.50%    
Revolving Credit Facility [Member] | Base [Member] | Maximum [Member] | Amended Credit Agreement [Member]      
Debt Instrument, Basis Spread on Variable Rate 1.25%    
Swingline Loans [Member] | Amended Credit Agreement [Member] | Wells Fargo Bank, National Association and Other Lenders [Member]      
Line of Credit Facility, Maximum Borrowing Capacity $ 5,000,000.0    
Swingline Loans [Member] | First Amendment to Credit Agreement [Member] | Wells Fargo Bank, National Association and Other Lenders [Member]      
Line of Credit Facility, Maximum Borrowing Capacity     $ 5,000,000.0