Share-Based Compensation (Details 1) (Service Based Options [Member], USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Service Based Options [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options granted (in shares)	391,750	57,000
Options weighted average grant date fair value (in dollars per share)	$ 7.47	$ 2.19
Options weighted average exercise price (in dollars per share)	$ 16.89	$ 4.01