Stock-based Compensation and Benefits - (Tables)

6 Months Ended

Jun. 30, 2016

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

Summary of Option Activity

The following table summarizes stock option activity for the six months ended June 30, 2016:

				Weighted
				Average
		Weighted		Remaining
		Average		Contractual	Aggregate
		Exercise		Term in	Intrinsic
	Options	Price		Years	Value
Outstanding at December 31, 2015	2,596,251	$	19.84	4.77	$	3,968
Granted	167,163		19.57
Forfeited	(21,480)		18.86
Surrendered	(35,841)		20.54
Exercised	(842)		20.53
Expired	(1,499)		19.82
Outstanding at June 30, 2016	2,703,752	$	19.82	4.50	$	1,433
Options exercisable at June 30, 2016	2,346,123	$	19.91	3.83	$	364
Options expected to vest	352,816	$	19.34	8.48	$	1,352

Summary of Restricted Stock Activity

The following table summarizes restricted stock and performance stock activity for the six months ended June 30, 2016:

		Weighted				Weighted
	Restricted	Average Grant-		Performance		Average Grant-
	Shares	Date Fair Value		Stock Units		Date Fair Value
Unvested at December 31, 2015	836,031	$	15.42	—	$	—
Vested	(68,085)		18.93	—		—
Granted	110,685		18.92	91,342		18.22
Forfeited	(14,747)		18.86	(2,870)		18.22
Surrendered	(33,466)		19.93	—		—
Unvested at June 30, 2016	830,418	$	15.40	88,472	$	18.22