Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2016

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

Summary of Stock Option Activity

The following table summarizes stock option activity for the three months ended March 31, 2016.

	Number of Options		Weighted- average Exercise Price		Weighted- average Remaining Contractual Term in Years	Aggregate Intrinsic Value
(amounts in thousands, except Weighted-average exercise price)
Outstanding at December 31, 2015	3,731,761		$	14.33
Granted	10,000		26.55
Exercised	(31,169	)	10.76			394
Forfeited	—		—
Expired	—		—
Outstanding at March 31, 2016	3,710,592		$	14.40	6.55	$	34,290
Exercisable at March 31, 2016	905,561		$	9.57	4.30	$	12,731

Summary of Restricted Stock Activity

The following table summarizes restricted stock unit activity for the three months ended March 31, 2016.

	Restricted Stock Units		Weighted- average Grant- date Fair Value
Outstanding and unvested at December 31, 2015	873,264		$	14.24
Granted	149,706		22.96
Vested	(97,298	)	14.78
Forfeited	(198	)	17.65
Outstanding and unvested at March 31, 2016	925,474		$	15.59