Goodwill and Intangible Assets - Schedule of Changes in the Carrying Amount of Goodwill (Detail) $ in Thousands	9 Months Ended
Sep. 30, 2016 USD ($)
Goodwill [Roll Forward]
Goodwill, gross, Beginning balance	$ 189,956
Goodwill, gross, Additions	1,833
Goodwill, gross, Impairments	0
Goodwill, gross, Ending balance	191,789
Accumulated impairment losses, Beginning balance	(38,240)
Accumulated impairment losses, Additions	0
Accumulated impairment losses, Impairments	0
Accumulated impairment losses, Ending balance	(38,240)
Goodwill, net, Beginning balance	151,716
Goodwill, net, Additions	1,833
Goodwill, net, Impairments	0
Goodwill, net, Ending balance	$ 153,549

Goodwill accumulated additions.

No definition available.

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- Definition

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.

+ 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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-Topic 350
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-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

+ Details

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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

+ Details

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- Definition

Amount before 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.

+ References

+ Details

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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

+ Details

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- Definition

The amount of an adjustment to a previously reported goodwill impairment charge, which will be recognized in the subsequent reporting period.

+ References

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- Definition

Amount of loss from the write-down 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267

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-Name Accounting Standards Codification
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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