Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2016

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

Summary of Stock Option Activity

The following table summarizes stock option activity for the six months ended June 30, 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	20,000		25.18
Exercised	(40,669	)	10.32			$	565
Forfeited	(275	)	18.19
Outstanding at June 30, 2016	3,710,817		$	14.44	6.32	$	39,696
Exercisable at June 30, 2016	896,061		$	9.58	4.06	$	13,935

Summary of Restricted Stock Activity

The following table summarizes restricted stock unit activity for the six months ended June 30, 2016.

	Restricted Stock Units		Weighted- average Grant- date Fair Value
Outstanding and unvested at December 31, 2015	873,264		$	14.24
Granted	247,285		23.85
Vested	(97,664	)	14.82
Forfeited	(623	)	21.18
Outstanding and unvested at June 30, 2016	1,022,262		$	16.51