Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Stock Option Activity

The following table summarizes stock options activity for the nine months ended September 30, 2014:

	Shares		Weighted-average exercise prices
Outstanding at December 31, 2013		1,285,536	$	4.77
Granted		100,000		24.01
Forfeited		31,164		1.30
Exercised		452,999		2.09
Outstanding at September 30, 2014		901,373	$	8.36
Exercisable at September 30, 2014		23,374	$	1.30

Nonvested Restricted Shares Activity

The following table summarizes nonvested restricted shares activity for the nine months ended September 30, 2014:

Nonvested restricted shares	Shares		Weighted-average grant date fair value
Nonvested at December 31, 2013		9,133	$	24.64
Vested		9,133		24.64
Granted		11,942		23.03
Nonvested at September 30, 2014		11,942	$	23.03