Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Share-based Compensation Expense

Total share-based compensation costs that have been included in the Company’s consolidated statements of operations were as follows (in millions):

	Three Months Ended March 31,
	2020		2019
Share-Based Compensation Expense Allocation Details:
Cost of services	$	1.9	$	1.3
Selling, general and administrative	2.9		3.0
Other	—		0.1
Total share-based compensation expense	$	4.8	$	4.4

Summary of Valuation Assumptions

The following table sets forth the significant assumptions used in the Black-Scholes option pricing model and the Monte Carlo simulations and the calculation of share-based compensation expense for the three months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
	2020	2019
Expected dividend yield	—%	—%
Risk-free interest rate	1.7%	2.4% to 2.5%
Expected volatility	43%	40% to 45%
Expected term (in years)	5.5	2.00 to 5.50

Schedule of Stock Options Activity

A summary of the options activity during the three months ended March 31, 2020 is shown below:

	Options	Weighted- Average Exercise Price
Outstanding at December 31, 2019	10,680,340	$	5.59
Granted	7,602	12.69
Exercised	(553,520)	5.53
Canceled/forfeited	(61,766)	2.46
Expired	(1,176,000)	14.71
Outstanding at March 31, 2020	8,896,656	$	4.41
Outstanding, vested and exercisable at March 31, 2020	6,362,802	$	5.04
Outstanding, vested and exercisable at December 31, 2019	7,868,280	$	6.57

Schedule of Non-Options Awards Activity

A summary of the RSA, RSU, and PBRSU activity during the three months ended March 31, 2020 is shown below:

							Weighted- Average Grant Date Fair Value
	RSAs		RSUs		PBRSUs			RSU		PBRSU
Outstanding and unvested at December 31, 2019	—		1,373,356		4,119,436			$	8.03	$	6.37
Granted	—		20,510		—			12.70		—
Vested	—		(1,720)		—			2.33		—
Forfeited	—		(46,367)		(111,223)			6.10		5.40
Outstanding and unvested at March 31, 2020	—		1,345,779		4,008,213			$	8.18	$	6.40
Shares surrendered for taxes for the three months ended March 31, 2020	—		545		—
Cost of shares surrendered for taxes for the three months ended March 31, 2020 (in millions)	$	—	$	—	$	—
Shares surrendered for taxes for the three months ended March 31, 2019	342,378		620		—
Cost of shares surrendered for taxes for the three months ended March 31, 2019 (in millions)	$	3.3	$	—	$	—