Principal amount per share.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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- Definition

The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

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

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- Definition

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

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

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- Definition

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

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- Definition

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.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Description of debt redemption features under terms of the debt agreement.

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

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- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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Senior Convertible Notes - Additional Information (Detail)		3 Months Ended		6 Months Ended
	Aug. 10, 2015 d $ / shares shares	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jul. 28, 2015 USD ($)
5.75% Senior convertible notes due August 15, 2018
Debt Instrument [Line Items]
Accretion expense- debt issuance cost \| $		$ 64,000,000	$ 0	$ 126,000,000	$ 0
Deerfield
Debt Instrument [Line Items]
Accretion expense- debt issuance cost \| $		$ 9,000	$ 9,000	$ 17,000	$ 17,000
5.75% Senior convertible notes due August 15, 2018
Debt Instrument [Line Items]
Maturity date	Aug. 15, 2018
Senior notes, effective interest rate	5.75%
No of convertible shares	147.0859
Principal amount per share	$ 1,000
Conversion price of shares	$ 6.80
Percentage of repurchase price	100.00%
Debt Instrument, redemption description	On or after the date that is one year following the original issue date of the 2018 notes, the Company will have the right to redeem for cash all or part of the 2018 notes if the last reported sale price of its common stock exceeds 130% of the conversion price then in effect for 20 or more trading days during the 30 consecutive trading day period ending on the trading day immediately prior to the date of the redemption notice. The redemption price will equal the sum of 100% of the principal amount of the 2018 notes to be redeemed, plus accrued and unpaid interest.
Percentage of conversion price equaling stock price	130.00%
Number of trading days \| d	20
Consecutive trading days	30 days
Debt Issuance Cost \| $						$ 800,000
5.75% Senior convertible notes due August 15, 2018 \| If certain fundamental changes occur
Debt Instrument [Line Items]
Conversion price of shares	$ 6.80
Number of shares to be converted \| shares	747,100
5.75% Senior convertible notes due August 15, 2018 \| Minimum \| If certain fundamental changes occur
Debt Instrument [Line Items]
Share price on date of conversion	$ 4.82
Senior convertible notes due December 31, 2019 \| Deerfield
Debt Instrument [Line Items]
Senior notes, effective interest rate		9.75%		9.75%
Senior convertible notes due December 31, 2019 \| Deerfield \| Less portion of commitment asset
Debt Instrument [Line Items]
Senior notes, effective interest rate		8.75%		8.75%