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INDEBTEDNESS (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Principal amount	$ 143,750us-gaap_DebtInstrumentCarryingAmount
Unamortized debt discount	(31,578)
Net Carrying value	$ 112,172us-gaap_LongTermDebt

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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