Long-term Debt - Summary of Long-term Debt (Parenthetical) (Details) $ in Millions	Mar. 31, 2016 USD ($)
Term Loan [Member]
Debt Instrument [Line Items]
Term loan, bearing interest at variable rates	2.64%
Quarterly installments of term loan, bearing interest at variable rates, amount	$ 1.3
7.125% Second-Priority Senior Secured Notes [Member]
Debt Instrument [Line Items]
Convertible subordinated debentures, bearing interest	7.125%
2.25% Convertible Subordinated Debentures [Member]
Debt Instrument [Line Items]
Convertible subordinated debentures, bearing interest	2.25%
4 1/16% Convertible Subordinated Debentures [Member]
Debt Instrument [Line Items]
Convertible subordinated debentures, bearing interest	4.0625%

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

+ References

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+ References

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