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Debt - Senior Secured Second Priority Notes (Details) - Senior Secured Second Priority Notes - USD ($)	Mar. 10, 2017	Jun. 30, 2016
Debt Instrument [Line Items]
Loss on early extinguishment on debt	$ 5,800,000
Cash premium	3.00%
Early extinguishment of debt cash premium	$ 3,700,000
Non-cash charge for write-off of unamortized deferred financing costs	2,100,000
7.50% Senior Notes, Due 2022
Debt Instrument [Line Items]
Aggregate principal amount		$ 610,000,000
Stated rate		7.50%
Aggregate principal amount redeemed	61,000,000
7.75% Senior Notes, Due 2024
Debt Instrument [Line Items]
Aggregate principal amount		$ 625,000,000
Stated rate		7.75%
Aggregate principal amount redeemed	$ 62,500,000

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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