Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [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,
	2018		2017
Share-Based Compensation Expense Allocation Details:
Cost of services	$	1.3	$	1.2
Selling, general and administrative	2.6		2.5
Other	—		—
Total share-based compensation expense (1)	$	3.9	$	3.7

(1) Includes $0 million and $0.1 million in share-based compensation expense paid in cash during the three months ended March 31, 2018 and 2017, respectively.  In addition to the share-based compensation expense recorded above, $0.1 million and $0.3 million of share-based compensation expense was capitalized to deferred contract costs for the three months ended March 31, 2018 and 2017, respectively. See Note 16, Deferred Contract Costs, for further discussion.

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, 2018 and 2017:

	Three Months Ended March 31,
	2018	2017
Expected dividend yield	—	—
Risk-free interest rate	2.3% to 2.7%	1.9% to 2.3%
Expected volatility	40% to 45%	45%
Expected term (in years)	2.75 to 6.25	6.25 to 6.29

Schedule of Stock Option Activity

A summary of the options activity during the three months ended March 31, 2018 is shown below:

	Shares		Weighted- Average Exercise Price
Outstanding at December 31, 2017	17,742,966		$	4.70
Granted	147,959		4.68
Exercised	(100,012	)	2.43
Canceled/forfeited	(81,773	)	3.82
Outstanding at March 31, 2018	17,709,140		4.71
Outstanding, vested and exercisable at March 31, 2018	5,971,110		$	8.66
Outstanding, vested and exercisable at December 31, 2017	5,778,376		$	8.87

Schedule of Restricted Stock Awards Activity

A summary of the restricted stock award activity during the three months ended March 31, 2018 is shown below:

	Shares		Weighted- Average Grant Date Fair Value
Outstanding and unvested at December 31, 2017	2,352,490		$	3.03
Granted	—		—
Vested	(1,037,342	)	2.77
Forfeited	—		—
Outstanding and unvested at March 31, 2018	1,315,148		$	3.32

Schedule of Restricted Stock Units Award Activity

A summary of the PBRSU activity during the three months ended March 31, 2018 is shown below:

	Shares		Weighted- Average Grant Date Fair Value
Outstanding and unvested at December 31, 2017	4,785,900		$	3.37
Granted	245,868		9.93
Vested	—		—
Forfeited	(768,741	)	4.00
Outstanding and unvested at March 31, 2018	4,263,027		$	3.64

A summary of the restricted stock unit activity during the three months ended March 31, 2018 is shown below:

	Shares		Weighted- Average Grant Date Fair Value
Outstanding and unvested at December 31, 2017	1,183,500		$	2.50
Granted	—		—
Vested	(5,325	)	2.35
Forfeited	(20,760	)	2.35
Outstanding and unvested at March 31, 2018	1,157,415		$	2.50