Business Acquisitions (Schedule of Purchase Price) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended		3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	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	$ 198,860