Information Pertaining to Term Loan and 2017 Notes (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2014
Debt Instrument [Line Items]
Balance - September 30, 2014	$ 25,564	$ 25,564
Principal Amount of Term Loans
Debt Instrument [Line Items]
Balance - December 31, 2013		0
Issuance of Term Loan		25,907
Exchange of Term Loan for 2017 Notes		(25,907)
Accrued paid in kind interest		0
Gain from change in fair value of debt		0
Balance - September 30, 2014	0	0
Convertible 2017 Notes
Debt Instrument [Line Items]
Balance - December 31, 2013		0
Issuance of Term Loan		0
Exchange of Term Loan for 2017 Notes		25,907
Accrued paid in kind interest		201
Gain from change in fair value of debt		0
Balance - September 30, 2014	26,108	26,108
Convertible 2017 Notes \| Principal Amount of Term Loans
Debt Instrument [Line Items]
Accrued paid in kind interest	200	200
Balance - September 30, 2014	25,564	25,564
Term Loan And2017 Notes
Debt Instrument [Line Items]
Balance - December 31, 2013		0
Issuance of Term Loan		25,907
Exchange of Term Loan for 2017 Notes		0
Accrued paid in kind interest		201
Gain from change in fair value of debt		(544)
Balance - September 30, 2014	25,564	25,564
Change in Estimated Fair Value
Debt Instrument [Line Items]
Balance - December 31, 2013		0
Issuance of Term Loan		0
Exchange of Term Loan for 2017 Notes		0
Accrued paid in kind interest		0
Gain from change in fair value of debt		(544)
Balance - September 30, 2014	$ (544)	$ (544)

Exchange of term loan for two thousand seventeen notes.

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- Details

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- Definition

Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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- Definition

Interest paid other than in cash for example by issuing additional debt securities. As a noncash item, it is added to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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