LONG-TERM DEBT OBLIGATIONS, Convertible Senior Notes (Details) (4.00% Convertible Senior Notes, USD $)	0 Months Ended	3 Months Ended
Jul. 25, 2012	Jun. 25, 2012	Mar. 31, 2015
4.00% Convertible Senior Notes
Debt Instrument [Line Items]
Senior Notes		$ 105,000,000.0	$ 105,000,000
Debt Instrument, Interest Rate, Stated Percentage		4.00%
Debt issuance costs		3,900,000
Net proceeds from issuance of 4.00% convertible senior notes		101,100,000
Amortization period for debt issuance cost related to convertible notes		7 years
Debt Instrument, Convertible, Shares per $1,000 principal amount of 4.00% Convertible Senior Notes	170.0319
Aggregate principal amount of senior convertible notes repurchased		1,000
Maximum number of shares upon conversion of the 4.00% Notes		17,857,143
Debt Instrument, Convertible, Conversion Price		$ 5.88
Percentage of common stock above conversion price (in hundredths)		130.00%
Number of consecutive trading days within measurement period		20 days
Number of consecutive trading days on which trading price is examined for triggering of conversion		30 days
Number of trading days to trigger measurement period within date company provides notice of redemption		5 days
Percentage of Principal Amount That The Redemption Price Will Be Equal To		100.00%
Debt Instrument, 4.00% Convertible, Interest Expense			$ 1,200,000

Amortization Period For Debt Issuance Cost Convertible Notes

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- Definition

Interest expense related to 4.00% convertible debt instruments which has been recognized for the period, including the contractual interest coupon and amortization of the debt discount, if any.

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Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees) for 4.00% Convertible Notes.

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- Definition

The number of shares of common stock if the 4.00% Notes are converted.

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No definition available.

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- Definition

Number Of Consecutive Trading Days On Which Trading Price Is Examined For Triggering Of Conversion

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Number of Consecutive Trading Days Within Measurement Period

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Number of Trading Days to Trigger Measurement Period Within Date Company Provides Notice of Redemption

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Conversion triggering common stock trading price as a percentage of price last reported in Measurement period converted at conversion rate.

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Percentage of principal amount that the redemption price will be equal to.

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- Definition

Repurchase of Aggregate Principal Amount of Convertible Notes

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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-Glossary Conversion Rate

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

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- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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-Glossary Financing Activities

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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