Share-Based Plans (Options Outstanding and Options Exercisable) (Details)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares | shares	1,072,974
Options Outstanding, Weighted-Average Remaining Contractual Life (years)	3 years 6 months 5 days
Options Outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 21.24
Options Exercisable, Number of Shares | shares	1,072,974
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	3 years 6 months 5 days
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	$ 21.24
$5.14 - 20.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, Minimum (in dollars per share)	5.14
Range of exercise prices, Maximum (in dollars per share)	$ 20
Options Outstanding, Number of Shares | shares	317,814
Options Outstanding, Weighted-Average Remaining Contractual Life (years)	2 years 2 months 10 days
Options Outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 8.95
Options Exercisable, Number of Shares | shares	317,814
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	2 years 2 months 10 days
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	$ 8.95
20.01 - 30.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, Minimum (in dollars per share)	20.01
Range of exercise prices, Maximum (in dollars per share)	$ 30
Options Outstanding, Number of Shares | shares	562,040
Options Outstanding, Weighted-Average Remaining Contractual Life (years)	5 years 2 months 10 days
Options Outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 23.53
Options Exercisable, Number of Shares | shares	562,040
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	5 years 2 months 10 days
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	$ 23.53
30.01 - 40.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, Minimum (in dollars per share)	30.01
Range of exercise prices, Maximum (in dollars per share)	$ 40
Options Outstanding, Number of Shares | shares	151,715
Options Outstanding, Weighted-Average Remaining Contractual Life (years)	1 year
Options Outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 32.03
Options Exercisable, Number of Shares | shares	151,715
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	1 year
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	$ 32.03
40.01 - 48.88 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, Minimum (in dollars per share)	40.01
Range of exercise prices, Maximum (in dollars per share)	$ 48.88
Options Outstanding, Number of Shares | shares	41,405
Options Outstanding, Weighted-Average Remaining Contractual Life (years)	5 months 5 days
Options Outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 44.91
Options Exercisable, Number of Shares | shares	41,405
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	5 months 5 days
Options Exercisable, Weighted-Average Remaining Contractual Life (years)	$ 44.91