Principal amount per share.

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- Definition

Amount of noncash expense included in interest expense to allocate debt discount and premium, and the costs to issue debt and obtain financing over the related debt instruments. Alternate captions include noncash interest expense.

+ References

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-Publisher FASB

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-Topic 230

-SubTopic 10

-Section 45

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- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (b)

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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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-Subparagraph (SX 210.5-02.22(a)(5))

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-Glossary Conversion Rate

-URI http://asc.fasb.org/extlink&oid=6509012

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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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- Definition

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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- Definition

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

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

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- Definition

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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Subparagraph (SX 210.5-02.22(a)(1))

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- Definition

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

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- Definition

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

+ References

No definition available.

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- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

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-Topic 942

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-Paragraph 1

-Subparagraph (SX 210.9-03.15(5))

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Senior Convertible Notes - Additional Information (Detail) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Aug. 18, 2010 D	Dec. 31, 2014
Debt Instrument [Line Items]
Accretion of debt issuance costs	$ 238,000	$ 223,000
Senior convertible notes due August 15, 2015
Debt Instrument [Line Items]
Principal amount	100,000,000		100,000,000	100,000,000
Accrued interest payable	1,000,000			2,400,000
No of convertible shares			147.0859
Principal amount per share			$ 1,000
Conversion price of shares			$ 6.80
Percentage of repurchase price			100.00%
Percentage of conversion price equaling stock price			150.00%
Number of trading days			20
Consecutive trading days			30 days
Debt Issuance Cost			4,200,000
Senior notes, effective interest rate	5.75%
Senior convertible notes due December 31, 2019 \| Deerfield
Debt Instrument [Line Items]
Principal amount	60,000,000
Senior notes, effective interest rate	9.75%
Senior convertible notes due December 31, 2019 \| Deerfield \| Less portion of commitment asset
Debt Instrument [Line Items]
Principal amount	$ 20,000,000
Senior notes, effective interest rate	8.75%