Shareholder's Equity and Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Equity [Abstract]

Schedule of Stock Option Activity

The following table sets forth the Company’s stock option activity:

	Six Months Ended June 30, 2021
				Weighted Average
	Stock Options			Exercise Price
Outstanding - beginning of period		2,500,727		$	43.26
Granted		273,588		$	166.65
Exercised		(642,182	)	$	22.12
Cancelled/Forfeited		(21,332	)	$	42.34
Expired		(11,545	)	$	14.41
Outstanding - end of period		2,099,256		$	65.97
Exercisable - end of period		1,356,368		$	55.28

Schedule of RSA/RSU Activity

The following table sets forth the Company’s RSA/RSU activity:

	Six Months Ended
	June 30, 2021
	Shares/Units
Outstanding and unvested - beginning of period		695,562
Granted		74,725
Vested		-
Forfeited		(37,535	)
Outstanding and unvested - end of period		732,752
Cumulative vested shares - end of period		1,913,916

Summary of Stock-Based Compensation Expense Recognized in Statements of Operations Related to All Outstanding Stock Based Compensation Awards

Stock-based compensation expense recognized in the condensed consolidated statements of operations related to all outstanding stock based compensation awards is summarized below (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Total direct costs	$	2,187	$	1,774	$	4,234	$	3,780
Selling, general and administrative		1,383		842		2,207		4,281
Total stock-based compensation expense	$	3,570	$	2,616	$	6,441	$	8,061