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Intangible Assets Including Goodwill - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Customer Relationships [Member]
Sep. 30, 2014
Minimum [Member]
Intellectual Property [Member]
Jun. 30, 2014
Minimum [Member]
Intellectual Property [Member]
Sep. 30, 2014
Minimum [Member]
Customer Relationships [Member]
Jun. 30, 2014
Minimum [Member]
Customer Relationships [Member]
Sep. 30, 2014
Minimum [Member]
Noncompete Agreements [Member]
Jun. 30, 2014
Minimum [Member]
Noncompete Agreements [Member]
Sep. 30, 2014
Maximum [Member]
Intellectual Property [Member]
Jun. 30, 2014
Maximum [Member]
Intellectual Property [Member]
Sep. 30, 2014
Maximum [Member]
Customer Relationships [Member]
Jun. 30, 2014
Maximum [Member]
Customer Relationships [Member]
Sep. 30, 2014
Maximum [Member]
Noncompete Agreements [Member]
Jun. 30, 2014
Maximum [Member]
Noncompete Agreements [Member]
Sep. 30, 2014
Trade Names [Member]
Jun. 30, 2014
Trade Names [Member]
Goodwill and Intangible Assets Disclosure [Abstract]                                  
Impairment charge $ 25.0 [1]                                
Amortization expense 1.2 0.2                              
2014 4.7                                
2015 2.8                                
2016 2.7                                
2017 2.6                                
2018 2.5                                
Finite-Lived Intangible Assets [Line Items]                                  
Finite-Lived Intangible Asset, Useful Life       6 years 6 years 1 year 6 months 1 year 6 months 3 years 3 years 15 years 15 years 15 years 15 years 5 years 5 years 5 years 5 years
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life                       10 years          
Finite-lived Intangible Assets, Fair Value Disclosure     0.9                            
Finite-Lived Intangible Assets, Amortization Expense, after Year Five $ 12.5                                
[1] A $25.0 million impairment charge was recorded in February 2005 as a result of the Company’s operating performance in fiscal 2005.