Goodwill - Goodwill by Reportable Segment and in Total (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Goodwill [Line Items]
Beginning Balance	$ 127,038us-gaap_Goodwill	$ 179,120us-gaap_Goodwill
Acquisitions	295,902us-gaap_GoodwillAcquiredDuringPeriod	16,120us-gaap_GoodwillAcquiredDuringPeriod
Impairment		(68,202)us-gaap_GoodwillImpairmentLoss
Foreign currency translation adjustments	(3,670)us-gaap_GoodwillTranslationAdjustments
Ending Balance	419,270us-gaap_Goodwill	127,038us-gaap_Goodwill
West Region [Member]
Goodwill [Line Items]
Beginning Balance	54,249	91,393
Acquisitions	246,506	16,120
Impairment		(53,264)
Foreign currency translation adjustments	(3,670)
Ending Balance	297,085	54,249
Central Region [Member]
Goodwill [Line Items]
Beginning Balance	72,789		72,789
Acquisitions	23,236
Ending Balance	96,025		72,789
East Region [Member]
Goodwill [Line Items]
Beginning Balance		14,938
Acquisitions	26,160
Impairment		(14,938)
Ending Balance	$ 26,160

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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