Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Dec. 31, 2009

Share-Based Compensation [Abstract]

Weighted-Average Assumptions Under Black-Scholes Model

Weighted-average grant-date fair value	$3.45
Expected volatility	23.53%-25.58%
Weighted-average expected volatility	24.79%
Risk-free interest rate	1.98%-2.97%
Expected dividend yield	6.67%-6.94%
Expected term in months	72

Summary Of Stock Option Activity

	Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (in 000's)
Outstanding at January 1, 2011		615,676		$	45.06
Granted		0			0
Exercised		(52,950	)	$	36.84
Cancelled or expired		(18,501	)		0
Outstanding at December 31, 2011		544,225		$	46.09		5.2	$	2,057
Exercisable at December 31, 2011		408,824		$	48.45		4.7	$	972

Summary Of Vested And Unvested RSU

	2011				2010
	Shares		Weighted- Average  Fair Value per Share		Shares		Weighted- Average  Fair Value per Share
Outstanding at January 1		55,000	$	41.40		0	$	0.00
Granted		80,000		40.22		55,000		41.40
Vested		0				0
Forfeited/Canceled		0				0
Outstanding at December 31		135,000	$	40.70		55,000	$	41.40