Deferred compensation (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

A summary of compensation expense for our cash awards is presented below:



	Successor						Predecessor
					Period from		Period from
					March 22, 2017		January 1, 2017
	For the Year Ended December 31,				through		through
	2019		2018		December 31, 2017		March 21, 2017
Cash LTIP expense (net of amounts capitalized)	$	200	$	543	$	1,192	$	5
Cash LTIP grants (1)	1,300		174		5,637		—
Cash LTIP payments	955		1,183		1,285		42


(1)	All grants are service-based except for a market-condition grant of $263 to our new chief executive officer in December 2019.

Rollforward of stock activity

A summary of our RSU activity is presented below:



	Equity classified RSUs
	Service-condition RSUs						Market-condition RSUs
	Weighted average grant date fair value		Restricted units		Vest date fair value		Weighted average grant date fair value		Restricted units
	($ per unit)						($ per unit)
Unvested and outstanding at January 1, 2018	$	—	—				$	—	—
Granted	17.66		92,017				$	—	—
Forfeited	17.66		(2,384	)			$	—	—
Unvested and outstanding at December 31, 2018	$	17.66	89,633				$	—	—
Granted	1.33		788,323				$	1.36	565,000
Vested	17.66		(25,099	)	$	33	$	—	—
Forfeited	3.02		(214,474	)			$	1.36	(175,000	)
Unvested and outstanding at December 31, 2019	$	2.41	638,383				$	1.36	390,000



	Liability-classified RSUs
	Weighted average grant date fair value		Restricted units		Vest date fair value
	($ per unit)
Unvested and outstanding at January 1, 2018	$	—	—
Granted	17.66		37,991
Forfeited	17.66		(795	)
Unvested and outstanding at December 31, 2018	$	17.66	37,196
Granted	1.44		71,570
Vested	9.33		(20,302	)	$	25
Forfeited	17.66		(12,685	)
Unvested and outstanding at December 31, 2019	$	4.57	75,779

A summary of our restricted stock activity is presented below:



	Time Shares						Performance Shares
	Weighted average grant date fair value		Restricted shares		Vest date fair value		Weighted average grant date fair value		Restricted shares		Vest date fair value
	($ per share)						($ per share)
Unvested and outstanding at March 21, 2017	$	—	—				$	—	—
Granted	20.11		1,403,626				20.12		429,510
Vested	—		—				20.05		(152,421	)	$	3,611
Cancelled	—		—				20.05		(7,616	)
Unvested and outstanding at December 31, 2017	$	20.11	1,403,626				$	20.15	269,473
Granted	18.75		41,250				18.75		13,750
Vested	20.12		(445,029	)	$	7,856	20.08		(107,590	)	$	529
Forfeited	20.05		(181,641	)			20.05		(50,105	)
Unvested and outstanding at December 31, 2018	$	20.06	818,206				$	20.12	125,528
Granted	2.40		886,451				1.38		1,087,110
Vested	20.08		(408,270	)	$	2,334	16.45		(33,359	)	$	59
Forfeited	20.05		(226,882	)			20.05		(89,936	)
Unvested and outstanding at December 31, 2019	$	5.41	1,069,505				$	1.53	1,089,343

Stock-based compensation cost

Stock-based compensation expense is as follows for the periods indicated:



				Successor						Predecessor
							Period from			Period from
							March 22, 2017			January 1, 2017
	For the Year Ended December 31,						through			through
	2019			2018			December 31, 2017			March 21, 2017
Stock-based compensation expense	$	2,303		$	13,444		$	12,606		$	194
Less: stock-based compensation cost capitalized	(722		)	(2,543		)	(2,773		)	(39		)
Total stock-based compensation expense, net	$	1,581		$	10,901		$	9,833		$	155
Payments for stock-based compensation	$	1,198		$	4,936		$	—		$	—
Recognized tax expense associated with stock-based compensation	$	—		$	22		$	—		$	—

Schedule of valuation of awards

The fair value and associated assumptions, which are considered to be Level 3 inputs within the fair value hierarchy, for our market condition RSAs and RSUs granted in 2019 are follows:



Valuation assumptions of market awards	Low			High
Risk free rate	1.75		%	2.52		%
Volatility (1)	64.1		%	90.0		%
Fair value per share/unit	$	0.94		$	8.59

_____________________________

(1) Based on daily log returns over a lookback period commensurate with the remaining term until vesting.