Long-term Debt - Covenants and default provisions (Details) - Senior Credit Facility	9 Months Ended
Dec. 31, 2015 USD ($)
Debt Instrument [Line Items]
Restricted senior secured debt limit required	$ 250,000,000
Restricted debt limit percent of net income (since October 7, 2010)	50.00%

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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