Other Intangible Assets, Net - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
	Jan. 15, 2014	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Business Acquisition, Effective Date of Acquisition		Jan. 15, 2014
Percentage of interests acquired	100.00%
Payments to acquire businesses		$ 102,500,000
Payments to Acquire Businesses, Net of Cash Acquired		102,400,000	0
Cash Acquired from Acquisition		100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	56,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	53,000,000
Goodwill	10,000,000	676,051,000		665,582,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent		9,000,000
Business Combination, Contingent Consideration, Held in Escrow	15,000,000	15,000,000
Amortization expense		1,200,000	1,500,000
Estimated annual amortization, 2014		5,400,000
Estimated annual amortization, 2015		5,400,000
Estimated annual amortization, 2016		5,400,000
Estimated annual amortization, 2017		5,400,000
Estimated annual amortization, 2018		5,300,000
Estimated annual amortization, 2019		$ 4,600,000