Quantitative Information Regarding Significant Unobservable Inputs (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015 Condition	Dec. 31, 2014
Contingent Consideration
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Fair Value	$ 31
Valuation Technique	Income Approach
Total term	5 years
Conditions	3
Bond equivalent yield discount rate	0.10%
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Fair Value	181	181
Significant Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Fair Value	181	181
Significant Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring \| Contingent Consideration
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Fair Value	$ 150
Total term	2 years
Conditions	4

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Fair Value Measurements, Number of Conditions

+ References

No definition available.

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Number Of Conditions

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Description of the inputs and valuation technique(s) used to measure fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity.

+ References

No definition available.

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