Accounting for Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Share-based Compensation Expense

The following table reflects the impact of total compensation expense related to stock-based equity plans on the reported operating results for the respective periods (in millions):

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2020			2019			2020			2019
Effect on loss before income taxes	$	(3	)	$	(3	)	$	(5	)	$	(6	)
Effect on net income (loss)	$	(2	)	$	(2	)	$	(4	)	$	(4	)

Schedule of Share-based Payment Awards, Stock Options, Valuation Assumptions

The fair value of stock options was estimated using the Black Scholes option pricing model with the following assumptions and weighted-average fair values during the three and six months ended June 30, 2020 and 2019:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020	2019			2020			2019
Expected volatility	N/A		67.5	%		73.5	%		68.4	%
Expected dividends	N/A		—			—			—
Expected term	N/A	6.0 years			6 years			5.6 years
Risk-free interest rate	N/A		1.9	%		1.0	%		2.6	%

Schedule of Share-based Compensation, Stock Options, Activity

Options outstanding and exercisable under the 2000 Plan and the 2009 Plan as of June 30, 2020, and changes during each of the three-month periods following December 31, 2019, was as follows (in millions, except share and per share data):

						Weighted-	Aggregate
				Weighted-		Average	Intrinsic
				Average		Remaining	Value as of
				Exercise		Contractual	June 30,
	Shares			Price		Term	2020
Outstanding at December 31, 2019		1,110,134			16.90	5.6 years
Granted		946,500			4.93
Exercised		—			—
Forfeited and cancelled		(159,938	)		33.90
Outstanding at March 31, 2020		1,896,696			9.50
Granted		—			—
Exercised		—			—
Forfeited and cancelled		(31,667	)		31.90
Outstanding at June 30, 2020		1,865,029		$	9.12	8.0 years	$	—
Exercisable at June 30, 2020		502,525		$	20.45	4.2 years	$	—

Schedule of Share-based Compensation, Restricted Stock, Activity

Restricted stock outstanding under the 2009 Plan as of June 30, 2020, and changes during each of the three-month periods following December 31, 2019, was as follows:

				Weighted-
				Average Grant
	Shares			Date Fair Value
Unvested at December 31, 2019		3,857,402		$	5.47
Granted		2,197,500			4.90
Vested		(988,650	)		5.77
Forfeited		(328,500	)		9.19
Unvested at March 31, 2020		4,737,752			4.89
Granted		4,000			3.19
Vested		(96,677	)		6.81
Forfeited		(26,335	)		5.00
Unvested at June 30, 2020		4,618,740			4.84

Schedule of Share-based Compensation, Restricted Stock Units, Activity

RSUs outstanding under the 2009 Plan as of June 30, 2020, and changes during each of the three-month periods following December 31, 2019, was as follows:

				Weighted-
				Average Grant
	Shares			Date Fair Value
Unvested at December 31, 2019		541,576		$	5.13
Granted		310,347			4.93
Vested		(238,184	)		5.47
Forfeited		—			—
Unvested at March 31, 2020		613,739			4.89
Granted		—			—
Vested		—			—
Forfeited		—			—
Unvested at June 30, 2020		613,739			4.89