Amount of tangible assets acquired less liabilities assumed at the acquisition date.

No definition available.

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- Definition

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.

+ References

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the fair value of the receivables acquired, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

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- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

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)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

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- Definition

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=51673353&loc=d3e41242-110953

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 10
-Article 5

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- Definition

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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Acquisitions (2016 and 2015 Acquisitions) - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill acquired	$ 26,116			$ 51,641
Other intangible assets, acquired	8,327		$ 24,987	24,987
Fair value of accounts receivable acquired	10,200		20,600	20,600
Income (loss) from continuing operations before income taxes	34,302	$ 82,991
Electric Power Division [Member]
Business Acquisition [Line Items]
Goodwill acquired	5,829
Oil and Gas Infrastructure Division [Member]
Business Acquisition [Line Items]
Goodwill acquired	20,287
Acquisitions 2016 [Member]
Business Acquisition [Line Items]
Net tangible assets acquired	23,200
Goodwill acquired	26,100
Other intangible assets, acquired	8,300
Goodwill expected to be deductible for income tax	400
Revenues	5,600
Income (loss) from continuing operations before income taxes	(2,400)
Acquisitions 2016 [Member] \| Electric Power Division [Member]
Business Acquisition [Line Items]
Goodwill acquired	5,800
Acquisitions 2016 [Member] \| Oil and Gas Infrastructure Division [Member]
Business Acquisition [Line Items]
Goodwill acquired	$ 20,300
Acquisitions 2015 [Member]
Business Acquisition [Line Items]
Net tangible assets acquired			34,400
Goodwill acquired			35,800
Other intangible assets, acquired			15,900	15,900
Goodwill expected to be deductible for income tax			$ 33,900	33,900
Acquisitions 2015 [Member] \| Electric Power Division [Member]
Business Acquisition [Line Items]
Goodwill acquired				31,200
Acquisitions 2015 [Member] \| Oil and Gas Infrastructure Division [Member]
Business Acquisition [Line Items]
Goodwill acquired				$ 20,400