Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Share-based Compensation [Abstract]

Schedule Of Option Activity And Changes

Option activity and changes during the year ended December 31, 2013 were as follows:

	Options		Weighted Average Exercise Price		Weighted Average Remaining Term (Years)	Aggregate Intrinsic Value
Outstanding at December 31, 2012	712,320		$	31.40
Granted	76,084		90.83
Exercised	(112,962	)	29.94
Cancelled	(16,827	)	52.56
Outstanding at December 31, 2013	658,615		$	37.98	5.8	$	55,386
Exercisable at December 31, 2013	392,200		$	25.23	5.3	$	37,980

Schedule Of Range Of Exercise Prices For Outstanding Options

For options outstanding at December 31, 2013, the options had the following range of exercise prices:

Range of Prices	Options  Outstanding	Weighted Average Remaining  Contractual Life (Years)
$14.24 - $19.29	170,553	4.5
$20.53 - $27.24	114,411	5.9
$30.07 - $36.10	135,119	3.1
$45.83 - $60.11	166,163	7.7
$80.77 - $91.40	72,369	9.1

Schedule Of Weighted Average Value And Assumptions For Fair Value Of Options

The table below presents the weighted average value and assumptions used in determining each option's fair value. Volatility was calculated using historical trends of the Company's common stock price.

	Stock Option Grants
	Year Ended December 31,
	2013			2012			2011
Weighted average fair value	$	34.06		$	23.39		$	19.22
Risk-free interest rate	0.9		%	1.0		%	2.8		%
Expected life in years	5			5			6
Expected volatility	44.5		%	45.7		%	41.9		%
Expected dividend yield	0.6		%	0.5		%	0.5		%

Schedule Of Non-Vested Restricted Stock Award Activity And Changes

Non-vested restricted stock awards as of December 31, 2013 and changes during the year ended December 31, 2013 were as follows:

	Number of Shares		Weighted Average Grant Date Fair Value
Non-vested at December 31, 2012	336,330		$	36.53
Granted	304		82.36
Vested	(144,586	)	22.27
Forfeited	(10,542	)	44.95
Non-vested at December 31, 2013	181,506		$	47.47