Business Acquisitions (Schedule of Purchase Price) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012 Business Acquisition, Acquiree - Duarte Business [Member]
Cash paid to seller				$ 198,900
Less cash acquired				(40)
Total purchase price	$ 0	$ 198,860	$ 0	$ 198,860