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Fair Value Measurements (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Mar. 31, 2020
Carrying value | Interest Rate Swap    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest rate swaps $ 2,363 $ 6,317
Carrying value | Senior Notes | 2016 Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value 0 600,000
Carrying value | Senior Notes | 2019 Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value 400,000 400,000
Carrying value | Senior Notes | 2021 Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value 600,000 0
Carrying value | Term Loans | 2012 Term B-5 Loans    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value 495,000 690,000
Carrying value | Revolving Credit Facility | 2012 ABL Revolver    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value 0 55,000
Fair value | Fair Value, Inputs, Level 2 | Interest Rate Swap    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Interest rate swaps 2,363 6,317
Fair value | Fair Value, Inputs, Level 2 | Senior Notes | 2016 Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value 0 603,000
Fair value | Fair Value, Inputs, Level 2 | Senior Notes | 2019 Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value 417,000 386,000
Fair value | Fair Value, Inputs, Level 2 | Senior Notes | 2021 Senior Notes    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value 570,000 0
Fair value | Fair Value, Inputs, Level 2 | Term Loans | 2012 Term B-5 Loans    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value 493,763 638,250
Fair value | Fair Value, Inputs, Level 2 | Revolving Credit Facility | 2012 ABL Revolver    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt, fair value $ 0 $ 55,000