Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Oct. 31, 2013 Subsequent Event Discounted Cash Flows Approach Fair Value, Observable inputs, Level Two Minimum	Oct. 31, 2013 Subsequent Event Discounted Cash Flows Approach Fair Value, Observable inputs, Level Two Maximum
Schedule of Intangible Assets Disclosure [Line Items]
Indefinite-lived intangible assets impairment, discount rate		12.50%	14.00%
Indefinite-lived intangible assets impairment, growth rate		2.00%	3.50%
Impairment charge	$ 1.1