Share-Based Compensation (Details 2) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of stock options exercised			19,074	118,996
Weighted average exercise prices			$ 5.92	$ 4.20