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Acquisitions and Dispositions - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Business Combinations [Abstract]
Purchase of non-controlling interests	$ 409	$ 274

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- References

No definition available.

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- Definition

The cash outflow during the period for redemption of redeemable noncontrolling interests.

+ References

No definition available.

+ Details

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