Acquisition of Construction Services Businesses - Additional Information (Detail) - Jun. 30, 2015 - USD ($)	Total	Total	Total
Business Acquisition [Line Items]
Acquisition date adjustment	$ 0	$ 1,380,000
Business acquisition cost		0	$ 5,000,000
Brigadier [Member]
Business Acquisition [Line Items]
Goodwill assigned for deductible tax purpose	$ 4,900,000	$ 4,900,000	$ 4,900,000

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.

No definition available.

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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.

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