Stock-Based Compensation (Additional Information Regarding Options Outstanding And Exercisable) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	2,979
Options Exercisable, Number of Shares	1,194
$0.00 - $10.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit	$ 0.00
Exercise price range, upper limit	$ 10.50
Options Outstanding, Number of Shares	9
Options Outstanding, Weighted Average Contractual Life	1 year 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 8.56
Options Exercisable, Number of Shares	9
Options Exercisable, Weighted Average Exercise Price	$ 8.56
$10.51 - $21.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit	$ 10.51
Exercise price range, upper limit	$ 21.00
Options Outstanding, Number of Shares	340
Options Outstanding, Weighted Average Contractual Life	2 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 19.41
Options Exercisable, Number of Shares	340
Options Exercisable, Weighted Average Exercise Price	$ 19.41
$21.01 - $31.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit	$ 21.01
Exercise price range, upper limit	$ 31.50
Options Outstanding, Number of Shares	104
Options Outstanding, Weighted Average Contractual Life	3 years
Options Outstanding, Weighted Average Exercise Price	$ 27.53
Options Exercisable, Number of Shares	95
Options Exercisable, Weighted Average Exercise Price	$ 27.39
$31.51 - $60.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit	$ 31.51
Exercise price range, upper limit	$ 60.00
Options Outstanding, Number of Shares	1,560
Options Outstanding, Weighted Average Contractual Life	3 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 40.81
Options Exercisable, Number of Shares	750
Options Exercisable, Weighted Average Exercise Price	$ 37.26
$60.01 - $79.67 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower limit	$ 60.01
Exercise price range, upper limit	$ 79.67
Options Outstanding, Number of Shares	966
Options Outstanding, Weighted Average Contractual Life	6 years 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 73.17
Options Exercisable, Weighted Average Exercise Price	$ 0.00