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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

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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.

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

-Publisher FASB

-Name Accounting Standards Codification

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The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Business Combinations (Details) (USD $)	3 Months Ended		12 Months Ended	0 Months Ended
Business Combinations (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Feb. 28, 2015
Business combinations
Operating income	$ 4,245,000us-gaap_OperatingIncomeLoss	$ 20,045,000us-gaap_OperatingIncomeLoss
Goodwill	128,727,000us-gaap_Goodwill		119,410,000us-gaap_Goodwill
Primoris AV
Business combinations
Operating income			4,200,000
Revenue			44,400,000
Primoris AV
Business combinations
Cash payment made				23,000,000
Current assets				4,000,000
Current liabilities				2,300,000
Plant and equipment				11,200,000
Goodwill				$ 9,300,000