Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Changes in Carrying Amount of Franchise Assets and Goodwill (Detail)

v2.4.1.9
Goodwill and Intangible Assets - Changes in Carrying Amount of Franchise Assets and Goodwill (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items]    
Net Goodwill, Beginning balance $ 475,929us-gaap_Goodwill  
Net Goodwill, Prior year acquisition allocations 230us-gaap_GoodwillPurchaseAccountingAdjustments  
Net Goodwill, Ending balance 476,159us-gaap_Goodwill  
Franchise Assets [Member]    
Indefinite-lived Intangible Assets [Line Items]    
Franchise Assets, Beginning balance   77,100us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_FranchiseRightsMember
Franchise Assets, Ending balance $ 77,100us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_FranchiseRightsMember 		$ 77,100us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_FranchiseRightsMember