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Financial Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value Measurements, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets measured at fair value on recurring basis	$ 13,218	$ 12,386
Cash Equivalents | Fair Value Measurements, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets measured at fair value on recurring basis	13,218	12,166
Marketable Securities | Fair Value Measurements, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets measured at fair value on recurring basis		220
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets measured at fair value on recurring basis	13,218	12,386
Carrying Amount | Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets measured at fair value on recurring basis	$ 13,218	12,166
Carrying Amount | Marketable Securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Assets measured at fair value on recurring basis		$ 220

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- Definition

Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

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No definition available.

+ Details

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- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

+ Details

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- Details

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- Details

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