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Fair Value Measurement of Assets and Liabilities - Summary of Company's Financial Instruments, Fair Value on a Recurring Basis (Detail) - Fair Value, Measurements, Recurring $ in Thousands	Dec. 31, 2016 USD ($)
Cash equivalents
Total cash equivalents	$ 35
Money market funds
Cash equivalents
Total cash equivalents	35
Level 1
Cash equivalents
Total cash equivalents	35
Level 1 | Money market funds
Cash equivalents
Total cash equivalents	$ 35

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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