Commitments and Contingencies - Future Minimum Capital Payments under Non-cancellable Data Licensing Agreements (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Commitments And Contingencies Disclosure [Abstract]
2017	$ 4,155
2018	4,298
2019	4,105
2020	3,270
2021	900
Capital commitment under non-cancellable data licensing agreements, Total	$ 16,728

Capital commitment under non-cancellable data licensing agreements due in the next fiscal year following the latest fiscal year.

No definition available.

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Capital commitment under non-cancellable data licensing agreements due in five years.

No definition available.

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Capital commitment under non-cancellable data licensing agreements due in four years.

No definition available.

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Capital commitment under non-cancellable data licensing agreements due in three years.

No definition available.

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Capital commitment under non-cancellable data licensing agreements due in two years.

No definition available.

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Capital commitment under non-cancellable data licensing agreements, net.

No definition available.

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Data Type:	xbrli:monetaryItemType
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No definition available.

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