Cash Flows, Supplemental and Noncash Disclosures (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Supplemental Disclosures [Abstract]
Cash Paid For Interest	$ 533	$ 589
Cash Paid for Income Taxes	26,362	23,050
Noncash Activities [Abstract]
Issuance Of Restricted Common Stock For Asset Acquisition	0	7,158
Capital lease asset additions and related obligations	0	140
Equipment Acquisitions Financed With Accounts Payable	$ 134	$ 145