Stock-based Compensation and Benefits (Tables)

3 Months Ended

Mar. 31, 2019

Stock-based Compensation and Benefits

Summary of Option Activity

				Weighted
				average
		Weighted		remaining
		average		contractual	Aggregate
		exercise		term in	intrinsic
	Options	price		years	value
Outstanding at December 31, 2018	1,264,876	$	22.33	3.92	$	11,387
Granted	3,749		35.75
Exercised	(117,618)		20.37
Forfeited	(40,023)		30.72
Outstanding at March 31, 2019	1,110,984	$	22.28	3.68	$	12,292
Options exercisable at March 31, 2019	892,922		20.14	2.53		11,731
Options vested and expected to vest	1,093,498		22.11	3.60		12,282

Summary of Restricted Stock Activity

		Weighted				Weighted
	Restricted	average grant-		Performance		average grant-
	stock shares	date fair value		stock units		date fair value
Unvested at December 31, 2018	146,494	$	28.19	192,049	$	26.40
Granted	3,749		35.75	—		—
Net adjustment due to performance	—		—	22,246		17.36
Vested	(26,594)		11.28	(95,308)		18.02
Forfeited	(15,863)		31.57	(19,401)		31.54
Unvested at March 31, 2019	107,786	$	32.13	99,586	$	31.40