Intangible Assets - Additional Information (Detail) (Discounted Cash Flows Approach, USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2014	Oct. 01, 2014 Subsequent Event Fair Value, Inputs, Level 3 Trade Names Minimum	Oct. 01, 2014 Subsequent Event Fair Value, Inputs, Level 3 Trade Names Maximum
Schedule of Intangible Assets Disclosure [Line Items]
Indefinite-lived intangible assets impairment, discount rate			14.00%	15.50%
Indefinite-lived intangible assets impairment, growth rate			2.50%	3.00%
Decrease in carrying value of trade name	$ 3.4	$ 3.4

Amount of increase (decrease) of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

Name:	us-gaap_IndefiniteLivedIntangibleAssetsPeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration