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Concentration of Business (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2019
USD ($)
supplier
tannery
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
supplier
tannery
Dec. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
supplier
tannery
Dec. 31, 2018
USD ($)
Concentration Risk [Line Items]            
Net sales     $ 938,735 $ 873,800 $ 1,757,779 $ 1,626,307
Number of tanneries | tannery 2   2   2  
Number of suppliers | supplier 2   2   2  
Long-lived assets $ 209,690 $ 213,796 $ 209,690   $ 209,690  
Sales Revenue, Net | International net sales            
Concentration Risk [Line Items]            
Net sales     $ 293,082 $ 300,785 $ 586,860 $ 599,992
Concentration risk (as a percent)     31.20% 34.40% 33.40% 36.90%
Sales Revenue, Net | Net sales in foreign currencies            
Concentration Risk [Line Items]            
Net sales     $ 255,990 $ 262,768 $ 474,406 $ 489,781
Concentration risk (as a percent)     27.30% 30.10% 27.00% 30.10%
Sales Revenue, Net | Customer Concentration Risk            
Concentration Risk [Line Items]            
Concentration risk (as a percent)     31.70% 30.60% 30.40% 30.10%
Accounts Receivable | Customer Concentration Risk            
Concentration Risk [Line Items]            
Concentration risk (as a percent) 25.60% 0.00%        
US            
Concentration Risk [Line Items]            
Long-lived assets $ 194,367 $ 196,702 $ 194,367   $ 194,367  
Foreign            
Concentration Risk [Line Items]            
Long-lived assets $ 15,323 $ 17,094 $ 15,323   $ 15,323