Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 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 months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
	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	$10.57	2,103	$13.24
Granted (1)	2,318	$3.32	1,710	$8.67
Vested (2)	(162)	$9.84	(333)	$11.85
Forfeited	—	$—	(74)	$10.30
Unvested, end of the period	4,851	$7.13	3,406	$11.14

(1)Includes 0.9 million and 0.4 million target performance-based RSU Equity Awards that will vest at a range of 0% to 300% and 0% to 200%, respectively.

(2)The fair value of shares vested was $0.7 million and $2.6 million during the three months ended March 31, 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 three months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
Performance-based Awards	2020		2019
Number of simulations	100,000		100,000
Expected term (in years)	2.9		2.9
Expected volatility	54.8	%	47.9	%
Risk-free interest rate	1.3	%	2.4	%
Dividend yield	—	%	—	%
Grant date fair value per performance-based RSU Equity Award	$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 months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
	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	$10.41	678	$12.36
Granted	863	$3.39	424	$10.78
Vested	(10)	$10.24	(164)	$12.02
Did not vest at end of performance period	(1)	$10.24	—	$—
Forfeited	—	$—	(82)	$11.58
Unvested, end of the period	1,707	$6.86	856	$7.52

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:

	March 31, 2020	December 31, 2019
	(In thousands)
Other current liabilities	$102	$966
Other long-term liabilities	207	2,089
Total Cash-Settled RSU Awards	$309	$3,055

Schedule of Cost by Plan

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

	Three Months Ended March 31,
	2020	2019
	(In thousands)
RSU Equity Awards	$3,948	$5,476
Cash-Settled RSU Awards	(1,996)	1,151
Cash SARs	(4,756)	—
	(2,804)	6,627
Less: amounts capitalized to oil and gas properties	(168)	(1,173)
Total share-based compensation expense (benefit), net	($2,972)	$5,454