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

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

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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Amount of loan with fixed rate of interest.

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Gross revenue realized by borrower from patents acquired utilizing term loan facility company entitlement percentage.

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No definition available.

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Loan Receivable - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended
	Oct. 19, 2012	Dec. 31, 2014	Dec. 31, 2013
Accounts Notes And Loans Receivable [Line Items]
Term loan facility	$ 1,000
Term loan maturity date	Oct. 18, 2017	Jun. 18, 2023
Estimated future cash flow projections, effective interest rate		18.00%us-gaap_FairValueInputsDiscountRate
On first 10 million gross revenue [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross revenue realized by borrower from patents acquired utilizing the term loan facility, company's entitlement percentage		15.00%
On all gross revenue over first 10 million [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross revenue realized by borrower from patents acquired utilizing the term loan facility, company's entitlement percentage		10.00%
Term Loan [Member]
Accounts Notes And Loans Receivable [Line Items]
Percentage of interest on Term loan facility	15.00%	15.00%	15.00%