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General - Narrative (Details)
6 Months Ended 32 Months Ended
Sep. 30, 2018
USD ($)
store
segment
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
store
Mar. 31, 2018
USD ($)
Restructuring Cost and Reserve [Line Items]        
Number of reportable segments | segment 6      
Restructuring charges $ 295,000 $ 1,518,000    
Fiscal Year 2016 Restructuring Plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges 295,000   $ 55,619,000  
Restructuring reserve $ 4,549,000   $ 4,549,000 $ 4,728,000
Facility Closing | Fiscal Year 2016 Restructuring Plan        
Restructuring Cost and Reserve [Line Items]        
Number of stores closed | store 43   43  
Selling, General and Administrative Expenses | Fiscal Year 2016 Restructuring Plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring charges $ 295,000 $ 1,518,000    
Short Term Liabilities | Fiscal Year 2016 Restructuring Plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring reserve 2,220,000   $ 2,220,000  
Long Term Liabilities | Fiscal Year 2016 Restructuring Plan        
Restructuring Cost and Reserve [Line Items]        
Restructuring reserve $ 2,329,000   $ 2,329,000