Share-Based Compensation (Details 2)	12 Months Ended
	Dec. 31, 2015 $ / shares shares
$ 8.00 to $24.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Outstanding Options | shares	380,080
Options Outstanding, Weighted Average Remaining Contractual Life	3 years 7 months
Options Outstanding, Weighted Average Exercise | $ / shares	$ 19.91
Options Exercisable, Number of Exercisable Options | shares	380,080
Options Exercisable, Exercisable Options, Weighted Average Exercise Price | $ / shares	$ 19.91
$25.00 to $45.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Outstanding Options | shares	950,310
Options Outstanding, Weighted Average Remaining Contractual Life	3 years 10 months
Options Outstanding, Weighted Average Exercise | $ / shares	$ 39.67
Options Exercisable, Number of Exercisable Options | shares	950,310
Options Exercisable, Exercisable Options, Weighted Average Exercise Price | $ / shares	$ 39.67
$8.00 to $45.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Outstanding Options | shares	1,330,390
Options Outstanding, Weighted Average Remaining Contractual Life	3 years 8 months
Options Outstanding, Weighted Average Exercise | $ / shares	$ 34.02
Options Exercisable, Number of Exercisable Options | shares	1,330,390
Options Exercisable, Exercisable Options, Weighted Average Exercise Price | $ / shares	$ 34.02