Amortizable Intangible Assets - Additional Information (Detail) (USD $)	Jun. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense estimated, year one (2014)	$ 82,503,000
Amortization expense estimated, year two (2015)	86,861,000
Amortization expense estimated, year three (2016)	82,331,000
Amortization expense estimated, year four (2017)	79,377,000
Amortization expense estimated, year five (2018)	$ 73,977,000