Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Schedule of Restricted Stock Unit Activity

RSU activity for the year ended December 31, 2019 is presented below (in thousands, except per share data):

				Weighted-
				Average
	Number of			Grant Date
	Shares			Fair Value
Unvested at December 31, 2018		497		$	40.89
Granted		436			43.84
Vested		(193	)		39.55
Forfeited		(84	)		43.24
Unvested at December 31, 2019		656		$	42.94

Schedule of Stock Option Activity

Stock option activity for the year ended December 31, 2019 is presented below (in thousands, except per share data and contractual term):

				Weighted -		Weighted -
				Average		Average
				Exercise		Remaining		Aggregate
	Number			Price Per		Contractual		Intrinsic
	of Shares			Share		Term (in years)		Value
Outstanding at December 31, 2018		583		$	35.27
Granted		—			—
Exercised		(125	)		34.03
Forfeited		(22	)		35.38
Outstanding at December 31, 2019		436		$	35.62		3.75	$	2,650
Exercisable at December 31, 2019		422		$	35.62		3.67	$	2,566
Vested and expected to vest at December 31, 2019		436		$	35.62		3.75	$	2,650

Summary of Shares Purchased by Employees Under the Stock Purchase Plan

Shares purchased by employees under the Stock Purchase Plan are as follows (in thousands, except per share data):

	Shares		Purchase
Purchase Period Ended	Purchased		Price
February 28, 2019		25	$	41.82
August 31, 2019		35	$	29.64
February 28, 2018		27	$	34.43
August 31, 2018		28	$	34.21