Accounts Receivable, Net - Summary of Accounts Receivable, Net (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013
Receivables [Abstract]
Trade accounts receivable	$ 131,060ck0001571371_TradeAccountsReceivable	$ 85,188ck0001571371_TradeAccountsReceivable
Retention receivables	12,053ck0001571371_RetentionReceivables	15,966ck0001571371_RetentionReceivables
Receivables from related parties	333	202
Accounts receivable	143,446us-gaap_AccountsReceivableGrossCurrent	101,356us-gaap_AccountsReceivableGrossCurrent
Less: Allowance for doubtful accounts	(2,144)	(2,019)
Accounts receivable, net	$ 141,302us-gaap_AccountsReceivableNetCurrent	$ 99,337us-gaap_AccountsReceivableNetCurrent

Retention receivables.

No definition available.

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- Definition

Trade accounts receivable.

+ References

No definition available.

+ Details

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- Definition

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 3

-Subparagraph a, b

-Article 5

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3-4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher SEC

-Name Regulation S-X (SX)

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-Section 02

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

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- Definition

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

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-Publisher FASB

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-Topic 850

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-Topic 944

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- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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