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401(k) and Employee Stock Ownership Plan (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Compensation and Retirement Disclosure [Abstract]
Annual Employee Additional Contribution Threshold, Percentage of Base Salary	100.00%
Annual Employee Additional Contribution, Maximum Allowable Contribution	$ 49
Term for Employees to Become Fully Vested	6 years
Company contributions to plan	$ 5,870	$ 5,400	$ 5,400

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

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Maximum amount the employee may contribute to a defined contribution plan.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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Term for Employees to Become Fully Vested

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