Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Carrying Value \| Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	$ 5,916	$ 6,317
Senior Notes \| 2016 Senior Notes \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, senior notes and term loans	600,000	600,000
Senior Notes \| 2019 Senior Notes \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, senior notes and term loans	400,000	400,000
Term Loans \| 2012 Term B-5 Loans \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, senior notes and term loans	634,000	690,000
Revolving Credit Facility \| 2012 ABL Revolver \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2012 ABL Revolver	0	55,000
Fair Value, Measurements, Recurring \| Fair Value \| Fair Value, Inputs, Level 2 \| Interest rate swaps
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps	5,916	6,317
Fair Value, Measurements, Recurring \| Senior Notes \| 2016 Senior Notes \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, senior notes and term loans	616,500	603,000
Fair Value, Measurements, Recurring \| Senior Notes \| 2019 Senior Notes \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, senior notes and term loans	400,000	386,000
Fair Value, Measurements, Recurring \| Term Loans \| 2012 Term B-5 Loans \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, senior notes and term loans	619,735	638,250
Fair Value, Measurements, Recurring \| Revolving Credit Facility \| 2012 ABL Revolver \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2012 ABL Revolver	$ 0	$ 55,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

Fair value of all derivative liabilities designated as fair value hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

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- Definition

Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

+ References

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- Definition

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+ References

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