Warrants - Additional Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2013
Other Liabilities Disclosure [Abstract]
Purchase of new common stock	1,875
Exercisable price per share	$ 15.76
Value of warrant to purchase common share	$ 1.35
Fair value of common share	$ 6.32us-gaap_SharePrice
Exercise price	$ 15.76
Risk free rate of interest	2.30%
Volatility rate	50.00%
Dividend rate	0.00%
Term in years	5 years
Warrants expiration date	Nov. 09, 2014

Expiration date of warrants held.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column A

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- Definition

Common Stock Exercise Price Per Share Under Warrant Agreement

+ References

No definition available.

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- Definition

Issuance Of Warrants To Purchase Common Stock Shares

+ References

No definition available.

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- Definition

Warrants To Purchase Shares Of Common Stock Price Per Share

+ References

No definition available.

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- Definition

Agreed upon price for the exchange of the underlying asset.

+ 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 (e)

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

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- Definition

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ References

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

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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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