Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Share-Based Compensation [Abstract]

Compensation Expense Included In Salaries And Employee Benefits Expense And Related Income Tax Benefits

(dollars in thousands)
	2012		2011
Compensation expense related to stock options	$	442	$	360
Income tax benefit related to stock options		155		126
Impact on basic earnings per share		0.01		0.01
Impact on diluted earnings per share		0.01		0.01

Estimate Fair Value Of Share-Based Awards With Weighted-Average Assumptions

	2012						2011
	Total Options Outstanding			Options Granted During the Period			Total Options Outstanding			Options Granted During the Period
Expected dividends		2.3	%		2.6	%		2.2	%		2.4	%
Expected volatility		32.5	%		41.0	%		31.7	%		39.2	%
Risk-free interest rate		3.1	%		0.9	%		3.6	%		2.1	%
Expected term (in years)		5.8			5.0			6.0			5.0
Weighted-average grant-date fair value	$	13.42		$	14.74			16.55		$	16.43

Activity Related To Stock Options

	Number of shares			Weighted average exercise price		Weighted average remaining contract life
Outstanding options, December 31, 2010		1,301,539		$	45.52
Granted		52,221			55.64
Exercised		(38,515	)		21.25
Forfeited or expired		(1,150	)		54.19
Outstanding options, March 31, 2011		1,314,095		$	46.63		4.6 Years
Outstanding exercisable at March 31, 2011		938,263		$	42.59		3.3 Years
Outstanding options, December 31, 2011		1,097,620		$	50.14
Granted		217,230			51.78
Exercised		(34,278	)		28.98
Forfeited or expired		(3,258	)		51.19
Outstanding options, March 31, 2012		1,277,314		$	50.98		5.2 Years
Outstanding exercisable at March 31, 2012		796,208		$	48.92		3.2 Years

Compensation Expense Included In Salaries And Employee Benefits Expense Related To Restricted Stock Grants

(dollars in thousands)
	2012		2011
Compensation expense related to restricted stock	$	1,710	$	1,678

Unvested Restricted Stock Award Activity

	For the Three Months Ended March 31,
	2012			2011
Balance, beginning of year		512,112			539,195
Granted		134,988			95,788
Forfeited		(3,055	)		(3,389	)
Earned and issued		(74,928	)		(67,324	)
Balance, end of year		569,117			564,270

Schedule Of Share And Dividend Equivalent Share Award Activity

	Number of share equivalents			Dividend equivalents			Total share equivalents			Value of share equivalents(1)
Balance, December 31, 2010		119,194			3,741			122,935		$	7,269,000
Granted		111,027			1,315			112,342			6,755,000
Forfeited share equivalents		—			—			—			—
Vested share equivalents		(1,350	)		(77	)		(1,427	)		(82,000	)
Balance, March 31, 2011		228,871			4,979			233,850		$	14,061,000
Balance, December 31, 2011		232,921			8,942			241,863		$	11,924,000
Granted		97,927			2,109			100,036			5,349,000
Forfeited share equivalents		(2,191	)		(95	)		(2,286	)		(122,000	)
Vested share equivalents		(5,483	)		(350	)		(5,833	)		(309,000	)
Balance, March 31, 2012		323,174			10,606			333,780		$	17,847,000

(1) Except for vested share payments, which are based on the cash paid at the time of vesting, the value of share equivalents is calculated based on the market price of the Company's stock at the end of the respective periods. The market price of the Company's stock was $53.47 and $60.13 on March 31, 2012 and 2011, respectively.