Ratio applied to the conversion of convertible preferred stock.

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Description of merger agreement.

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Percentage of covered securities sale.

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Percent of holding acquired under business purchase agreement.

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Number of shares of equity interests issued or issuable to acquire entity.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Face amount or stated value per share of common stock.

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Number of shares issued for each share of convertible preferred stock that is converted.

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

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

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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

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Number of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed.

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Closing of Merger and Financing Transaction - Additional Information (Detail) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Sep. 17, 2013	Sep. 03, 2013	Mar. 31, 2014	Dec. 31, 2013	Dec. 06, 2013	Dec. 31, 2012	Jul. 31, 2013
Business Acquisition [Line Items]
Common Stock, Par or Stated Value Per Share	$ 0.001			$ 0.001	$ 0.001	$ 0.001	$ 0.001
Preferred stock, par value (in dollars per share)						$ 0.01
Percentage of stock acquired	93.00%
Merger agreement, description	The Lock-up and Voting Agreements provide that such persons may sell, transfer or convey: (i) up to 50% of their respective Covered Securities during the period commencing on the one-year anniversary of the Closing Date and ending on the eighteen-month anniversary of the Closing Date; and (ii) up to an aggregate of 75% of their respective Covered Securities during the period commencing on the eighteen-month anniversary of the Closing Date and ending on the two-year anniversary of the Closing Date.
Goodwill	$ 93,842,000us-gaap_Goodwill				$ 93,842,000us-gaap_Goodwill
Intangible assets	2,241,000us-gaap_FiniteLivedIntangibleAssetsNet				2,741,000us-gaap_FiniteLivedIntangibleAssetsNet
Series B Convertible Preferred Stock [Member]
Business Acquisition [Line Items]
Preferred stock, par value (in dollars per share)			$ 0.01
Shares to be purchased			7,544,704.4
Number of common stock shares issuable for preferred stock			2
Share price			$ 4.00
Shares issued and sold		25,000
Gross proceeds from Securities Purchase Agreement		100,000
Ending On Eighteen Month Anniversary [Member]
Business Acquisition [Line Items]
Percentage of covered securities	50.00%
Ending On Two Year Anniversary [Member]
Business Acquisition [Line Items]
Percentage of covered securities	75.00%
Merger Agreement [Member]
Business Acquisition [Line Items]
Exchange ratio			1.1533
Common Stock, Par or Stated Value Per Share			$ 0.001
Business acquisition, share price			$ 1.08
Shares issued as Merger consideration			21,109,949
Cash payment in Merger			293,000
Goodwill			93,842,000
Intangible assets			10,000
Amortization period			5 years
Merger Agreement [Member] \| Bridge Notes [Member]
Business Acquisition [Line Items]
Debt instrument, face amount								$ 2,000,000
Stated interest per annum								8.00%
Private Placement [Member] \| Series B Convertible Preferred Stock [Member]
Business Acquisition [Line Items]
Preferred stock, par value (in dollars per share)			$ 0.001