Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2012

Fair Value Assumptions

	2012	2011
Risk-free rate of return	0.68% to 1.11%	0.89% to 2.07%
Expected dividend yields	1.63% to 1.67%	1.37% to 1.54%
Expected award life (years)	5.03 to 5.04	5.04 to 5.07
Expected volatility	32.5% to 32.8%	32.1% to 32.5%

Summary of Option Activity

	Shares			Weighted-Average Exercise Price
Outstanding at January 1, 2012		411,314		$	36.70
Granted		0		$	0.00
Exercised		0		$	0.00
Expired or forfeited		(5,731	)	$	35.29
Outstanding at September 30, 2012		405,583		$	36.72

Summary of Option Activity Under Amended Plan

	Shares			Weighted-Average Exercise Price
Outstanding at January 1, 2012		927,225		$	30.18
Granted		370,720		$	29.59
Exercised		(2,764	)	$	28.01
Expired or forfeited		(142,255	)	$	32.26
Outstanding at September 30, 2012		1,152,926		$	29.74

Two Thousand And Seven Plan [Member]

Summary of Restricted Share Units Activity Under 2007 Plan

	Shares			Weighted-Average Grant Date Fair Value
Outstanding at January 1, 2012		148,373		$	31.09
Granted		163,598		$	29.64
Vested and issued		(43,277	)	$	32.64
Expired or forfeited		(26,177	)	$	32.56
Outstanding at September 30, 2012		242,517		$	30.16

2007 Plan [Member]

Summary of Cash-Settled SARs Activity Under 2007 Plan

	Shares			Weighted-Average Exercise Price
Outstanding at January 1, 2012		927,225		$	30.18
Granted		370,720		$	29.59
Exercised		(2,764	)	$	28.01
Expired or forfeited		(142,255	)	$	32.26
Outstanding at September 30, 2012		1,152,926		$	29.74

Amended Plan [Member]

Summary of Cash-Settled SARs Activity Under 2007 Plan

	Shares			Weighted-Average Exercise Price
Outstanding at January 1, 2012		927,225		$	30.18
Granted		370,720		$	29.59
Exercised		(2,764	)	$	28.01
Expired or forfeited		(142,255	)	$	32.26
Outstanding at September 30, 2012		1,152,926		$	29.74