Significant Accounting Policies and Estimates (Intangible Assets) - Additional Information (Detail) (Finite-Lived Intangible Assets [Member])	12 Months Ended
	Sep. 30, 2014
Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Customer lists, non-compete agreements, customer relationships, management agreements and trade names, estimated useful lives	2 years
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Customer lists, non-compete agreements, customer relationships, management agreements and trade names, estimated useful lives	10 years