Stock-Based Compensation (Details 2) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 25, 2014 $ / shares shares	Sep. 30, 2015 USD ($) plan $ / shares shares	Sep. 30, 2014 USD ($) $ / shares shares	Sep. 30, 2013 USD ($)
Stock Option Plan Adopted in August 2004
Information relating to stock options
Number of shares of common stock reserved for issuance		1,000,000
Stock Option Plan Adopted in January 2007
Information relating to stock options
Number of shares of common stock reserved for issuance		500,000
Employee and Directors Stock Options
Information relating to stock options
Number of plans | plan		2
Number of shares of common stock reserved for issuance		1,500,000
Period during which options are exercisable		10 years
Vesting of awards per year (as a percent)		33.33%
Award vesting period		3 years
Fair value assumptions
Fair Value (in dollars per share) | $ / shares	$ 8.17
Dividend Yield (as a percent)	1.90%
Risk-Free Interest Rate (as a percent)	0.96%
Expected Volatility (as a percent)	28.00%
Expected Life	3 years
Stock-based employee compensation expense | $		$ 534	$ 474	$ 424
Remaining unrecognized compensation expense | $		$ 678
Weighted average period for recognition		1 year 2 months 27 days
Activity under stock option plans, number of shares
Outstanding at beginning of the period (in shares)		282,001
Granted (in shares)		81,100
Canceled (in shares)		(4,500)
Outstanding at end of the period (in shares)		358,601	282,001
Vested or expected to vest (in shares)		337,516
Exercisable at end of period (in shares)		234,867
Outstanding at end of period, Aggregate Intrinsic Value | $		$ 358
Vested or expected to vest, Aggregate Intrinsic Value | $		358
Exercisable at end of the period, Aggregate Intrinsic Value | $		$ 358
Weighted Average Exercise Prices
Outstanding at beginning of the period (in dollars per share) | $ / shares		$ 51.61
Granted (in dollars per share) | $ / shares		46.72
Canceled (in dollars per share) | $ / shares		62.41
Outstanding at end of period (in dollars per share) | $ / shares		50.37	$ 51.61
Vested or expected to vest (in dollars per share) | $ / shares		50.50
Exercisable at end of the period (in dollars per share) | $ / shares		$ 51.45
Outstanding at end of the period, Weighted Average Remaining Contractual Life		5 years 6 months
Vested or expected to vest, Weighted Average Remaining Contractual Life		5 years 4 months 6 days
Exercisable at end of the period, Weighted Average Remaining Contractual Life		3 years 9 months 18 days
Employee and Directors Stock Options | Certain Employees
Activity under stock option plans, number of shares
Granted (in shares)	81,100
Weighted Average Exercise Prices
Granted (in dollars per share) | $ / shares	$ 46.72