Construction Services Redeemable Noncontrolling Interests - Summary of Redeemable Noncontrolling Interest (Detail) $ in Thousands	6 Months Ended
Jun. 30, 2015 USD ($)
Redeemable Noncontrolling Interest [Line Items]
Balance, December 31, 2014	$ 20,042
Foreign currency exchange translation adjustment	(1,028)
Adjustment to redemption value	658
Balance, June 30, 2015	19,301
Redeemable Noncontrolling Interest (Temporary Equity) [Member]
Redeemable Noncontrolling Interest [Line Items]
Balance, December 31, 2014	20,042
Net Income (Loss) attributable to redeemable noncontrolling interest	(48)
Foreign currency exchange translation adjustment	(35)
Adjustment to redemption value	(658)
Balance, June 30, 2015	$ 19,301

Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section S99

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Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Adjustments to temporary equity resulting from foreign currency translation adjustments.

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