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Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013
Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Intangible assets subject to amortization |  |  | $ 426,732
Indefinite-lived Intangible Assets | 4,500 |  | 4,500
Intangible assets, gross |  |  | 431,232
Accumulated Amortization | (230,712) |  | (223,355)
Amortization Expense | (8,245) | (5,301) |
Additions | 21,048 |  |
Foreign Currency Adjustments | (1,107) |  |
Intangible Assets Subject to Amortization, Net | 215,073 |  |
Intangible assets, net | 219,573 |  | 207,877
Remaining Weighted Average Amortization Period in Years | 11 years 7 months 6 days |  |
Customer Relationships [Member] |  |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Intangible assets subject to amortization |  |  | 199,224
Accumulated Amortization |  |  | (59,417)
Amortization Expense | (3,650) |  |
Additions | 11,131 |  |
Foreign Currency Adjustments | 195 |  |
Intangible Assets Subject to Amortization, Net | 147,483 |  |
Remaining Weighted Average Amortization Period in Years | 10 years 7 months 6 days |  |
Backlog [Member] |  |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Intangible assets subject to amortization |  |  | 136,831
Accumulated Amortization |  |  | (127,233)
Amortization Expense | (2,957) |  |
Additions | 4,908 |  |
Foreign Currency Adjustments | 730 |  |
Intangible Assets Subject to Amortization, Net | 12,279 |  |
Remaining Weighted Average Amortization Period in Years | 10 months 24 days |  |
Trade Names [Member] |  |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Intangible assets subject to amortization |  |  | 40,342
Accumulated Amortization |  |  | (4,228)
Amortization Expense | (466) |  |
Additions | 3,917 |  |
Foreign Currency Adjustments | (1,954) |  |
Intangible Assets Subject to Amortization, Net | 37,611 |  |
Remaining Weighted Average Amortization Period in Years | 22 years 8 months 12 days |  |
Non-compete Agreements [Member] |  |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Intangible assets subject to amortization |  |  | 28,895
Accumulated Amortization |  |  | (22,861)
Amortization Expense | (652) |  |
Additions | 688 |  |
Foreign Currency Adjustments | (71) |  |
Intangible Assets Subject to Amortization, Net | 5,999 |  |
Remaining Weighted Average Amortization Period in Years | 3 years 3 months 18 days |  |
Patented Rights and Developed Technology [Member] |  |  |
Finite And Indefinite Lived Intangible Assets [Line Items] |  |  |
Intangible assets subject to amortization |  |  | 21,440
Accumulated Amortization |  |  | (9,616)
Amortization Expense | (520) |  |
Additions | 404 |  |
Foreign Currency Adjustments | (7) |  |
Intangible Assets Subject to Amortization, Net | $ 11,701 |  |
Remaining Weighted Average Amortization Period in Years | 5 years 1 month 6 days |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before accumulated amortization of intangible assets, excluding goodwill. + References No definition available. + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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