Employee Benefits (Tables)

12 Months Ended

Sep. 30, 2011

Employee Benefits [Abstract]

Black-Scholes option pricing model to determine grant-date fair value for stock options

Year ended September 30,	2011			2010			2009
Risk-free interest rates		1.91	%		2.93	%		3.75	%
Dividend yield		3.74	%		3.12	%		2.41	%
Life of option	5.93		yrs.	5.90		yrs.	6.30-8.20		yrs.
Share price volatility		34	%		42	%		57	%
Forfeitures (by employee group)		0%-10	%		0%-10	%		0%-13	%

Summary of stock option plans

				Wtd Avg		Wtd Avg		Aggregate
				Exercise		Remaining		Intrinsic
	Options			Price		Life (Yrs)		Value
Outstanding beginning of period		1,425		$	11.44
Grants		73			22.55
Exercises		(485	)		3.54
Forfeitures		(18	)		23.12
Cancellations		(7	)		22.48
Outstanding end of period		988		$	15.86		5.0515	$	3,039
Exercisable end of period		859		$	14.60		4.5635	$	3,039

Summary of nonvested shares

				Weighted-
				Average
				Grant Date
	Options			Fair Value
Nonvested beginning of period		639		$	3.75
Granted		73			4.97
Vested		(565	)		2.82
Forfeited		(18	)		7.92
Nonvested end of period		129		$	7.91