Employee Stock Plans (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Stock-Based Compensation Awards

Compensation expense for stock-based awards recognized during the three months ended March 31, 2021 and 2020 was as follows (in thousands):

	Three Months Ended March 31,
	2021		2020
Stock options	$	301	$	421
Restricted stock units and awards	1,381		1,171
Performance share units	1,173		431
Total stock-based compensation expense	$	2,855	$	2,023

Schedule of Stock Options, Restricted Stock Units and Awards, and Performance Share Units Award Activity

The following table presents our stock options and restricted stock units and awards activity during the three months ended March 31, 2021 (in thousands, except per share data):

	Stock Options			Restricted Stock Units and Awards
	Number of Options	Weighted Average Exercise Price Per Share		Number of Shares	Weighted Average Grant-Date Fair Value (1)
Outstanding at beginning of year	1,820	$	15.02	461	$	21.03
Granted	—	$	—	140	$	27.56
Exercised or released	(397)	$	11.10	(99)	$	22.38
Expired or canceled	—	$	—	—	$	—
Outstanding at March 31, 2021	1,423	$	16.12	502	$	22.58
Exercisable at March 31, 2021	978	$	15.19

(1)Represents weighted average market value of the shares; awards are granted at no cost to the recipients.

The following table presents our PSU award activity during the three months ended March 31, 2021 (in thousands, except per share data):

	Performance Share Units	Weighted Average Grant-Date Fair Value Per Unit
Outstanding at beginning of year	307	$	22.18
Granted	140	$	27.56
Vested	—	$	—
Adjustments for performance results	—	$	—
Canceled	—	$	—
Outstanding at March 31, 2021	447	$	23.86