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Goodwill and Intangible Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill			$ 1,958
Goodwill impairment			0	0
Increase in gross carrying amount of intangibles	1,561	1,106	1,561	1,106
Amortization expense on intangible assets	693	757	2,104	2,301
2014 Acquisitions [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Increase in gross carrying amount of intangibles	$ 1,561		$ 1,561

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Amortization of intangible assets continuing operations.

+ References

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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

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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.

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-Publisher FASB

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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

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