Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Restricted Stock Unit Activity

The following table summarizes activity for restricted stock units may be settled in common stock (“RSU Equity Awards”) for the three and six months ended June 30, 2020 and 2019:

	Three Months Ended June 30,
	2020		2019
	RSU Equity Awards (in thousands)	Weighted Average Grant Date Fair Value	RSU Equity Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested, beginning of the period	4,851	$6.95	3,406	$11.14
Granted (1)	3,257	$1.26	171	$7.87
Vested (2)	(900)	$10.06	(458)	$12.51
Forfeited	—	$—	(64)	$11.43
Unvested, end of the period	7,208	$3.99	3,055	$10.75

	Six Months Ended June 30,
	2020		2019
	RSU Equity Awards (in thousands)	Weighted Average Grant Date Fair Value	RSU Equity Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested, beginning of the period	2,695	$10.25	2,103	$13.24
Granted (1)	5,575	$2.12	1,881	$8.60
Vested (2)	(1,062)	$10.02	(791)	$12.23
Forfeited	—	$—	(138)	$10.82
Unvested, end of the period	7,208	$3.99	3,055	$10.75

(1)Includes 0.3 million and zero target performance-based RSU Equity Awards during the three months ended June 30, 2020 and 2019, respectively, and 1.1 million and 0.4 million during the six months ended June 30, 2020 and 2019, respectively. The awards granted during the six months ended June 30, 2020 and 2019 will vest at a range of 0% to 300% and 0% to 200%, respectively.

(2)The fair value of shares vested was $0.6 million and $3.4 million during the three months ended June 30, 2020 and 2019, respectively, and $1.3 million and $6.0 million for the six months ended June 30, 2020 and 2019, respectively.

Schedule of Fair Value Inputs

The following table summarizes the assumptions used and the resulting grant date fair value per performance-based RSU Equity Award granted during the six months ended June 30, 2020 and 2019:

Performance-based Awards	June 29, 2020		January 31, 2020		January 31, 2019
Expected term (in years)	2.5		2.9		2.9
Expected volatility	113.2	%	54.8	%	47.9	%
Risk-free interest rate	0.2	%	1.3	%	2.4	%
Dividend yield	—	%	—	%	—	%
Grant date fair value per performance-based RSU Equity Award	$1.80		$3.39		$10.78

Schedule of Cash-Settleable Vesting Period RSU Awards

The table below summarizes the activity for restricted stock units that may be settled in cash (“Cash-Settled RSU Awards”) for the three and six months ended June 30, 2020 and 2019:

	Three Months Ended June 30,
	2020		2019
	Cash-Settled RSU Awards (in thousands)	Weighted Average Grant Date Fair Value	Cash-Settled RSU Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested, beginning of the period	1,707	$7.85	1,044	$11.69
Granted	386	$2.03	25	$8.1
Vested	(2)	$16.66	(17)	$11.06
Did not vest at end of performance period	(11)	$15.27	—	$—
Forfeited	—	$—	(21)	$16.38
Unvested, end of the period	2,080	$6.72	1,031	$11.52

	Six Months Ended June 30,
	2020		2019
	Cash-Settled RSU Awards (in thousands)	Weighted Average Grant Date Fair Value	Cash-Settled RSU Awards (in thousands)	Weighted Average Grant Date Fair Value
Unvested, beginning of the period	855	$12.42	678	$12.36
Granted	1,249	$2.98	424	$10.62
Vested	(12)	$12.85	(17)	$11.06
Did not vest at end of performance period	(12)	$16.66	—	$—
Forfeited	—	$—	(54)	$15.21
Unvested, end of the period	2,080	$6.72	1,031	$11.52

Schedule of Cash-Settleable Restricted Stock Units Awards

The following table summarizes the Company’s liability for Cash-Settled RSU Awards and the classification in the consolidated balance sheets for the periods indicated:

	June 30, 2020	December 31, 2019
	(In thousands)
Other current liabilities	$231	$966
Other long-term liabilities	674	2,089
Total Cash-Settled RSU Awards	$905	$3,055

Schedule of Cost by Plan

The following table presents share-based compensation expense (benefit), net for each respective period:

	Three Months Ended June 30,		Six Months Ended June 30,
	2020	2019	2020	2019
	(In thousands)
RSU Equity Awards	$3,212	$2,907	$7,160	$8,383
Cash-Settled RSU Awards	596	203	(1,400)	1,354
Cash SARs	1,115	—	(3,641)	—
	4,923	3,110	$2,119	$9,737
Less: amounts capitalized to oil and gas properties	(2,162)	(1,131)	(2,330)	(2,304)
Total share-based compensation expense (benefit), net	$2,761	$1,979	($211)	$7,433