Goodwill and Intangible Assets - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	14 years 8 months 12 days
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	10 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	14 years
Technology and Related [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	14 years
Technology and Related [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	20 years