Long-Term Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2019

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Amount of Compensation Expense Recognized

The following table summarizes the amount of recognized compensation expense associated with the MIP and Directors Compensation Plan, which are reflected in the accompanying Unaudited Condensed Statements of Consolidated Operations for the periods presented (in thousands):

	For the Three Months Ended
	March 31,
	2019		2018
Equity classified awards
TSUs	$	669	$	948
PSUs		396		—
Board RSUs		113		19
Restricted stock options		—		209
	$	1,178	$	1,176

2017 Non-Employee Directors Compensation Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Information Regarding Restricted Stock Unit Awards

The following table summarizes information regarding the Board RSUs granted under the Directors Compensation Plan for the period presented:

				Weighted-
				Average Grant
	Number of			Date Fair Value
	Units			per Unit (1)
Board RSUs outstanding at December 31, 2018		39,604		$	11.36
Granted		—		$	—
Forfeited		—		$	—
Vested		(10,809	)	$	11.57
Board RSUs outstanding at March 31, 2019		28,795		$	11.29

(1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued.

TSUs [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Information Regarding Restricted Stock Unit Awards

The following table summarizes information regarding the TSUs granted under the MIP for the period presented:

				Weighted-
				Average Grant
	Number of			Date Fair Value
	Units			per Unit (1)
TSUs outstanding at December 31, 2018		598,024		$	11.35
Granted (2)		276,398		$	6.92
Forfeited		(17,250	)	$	10.00
Vested		(276,849	)	$	7.07
TSUs outstanding at March 31, 2019		580,323		$	11.32

(1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued.

(2) The aggregate grant date fair value of TSUs issued for the three months ended March 31, 2019 was $1.9 million based on a grant date market price ranging from $6.87 to $8.70 per share.

PSUs [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Information Regarding Restricted Stock Unit Awards

The following table summarizes information regarding the PSUs granted under the MIP for the period presented:

				Weighted-
				Average Grant
	Number of			Date Fair Value
	Units			per Unit (1)
PSUs outstanding at December 31, 2018		393,500		$	8.14
Granted (2)		7,750		$	5.91
Forfeited		(13,250	)	$	7.59
Vested		—		$	—
PSUs outstanding at March 31, 2019		388,000		$	8.11

(1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued.

(2) The aggregate grant date fair value of PSUs issued for the three months ended March 31, 2019 was less than $0.1 million based on a calculated fair value price ranging from $5.11 to $6.76 per share.

Schedule of Fair Value Assumptions for PSUs

A Monte Carlo simulation was used in order to determine the fair value of these awards at the grant date.

The assumptions used to estimate the fair value of the PSUs are as follows:

Share price targets	$	12.50		$	15.00		$	17.50
Risk-free interest rate:
Awards Issued on January 1, 2019		2.44	%		2.44	%		2.44	%
Dividend yield		—			—			—
Expected volatility:
Awards Issued on January 1, 2019		54.0	%		54.0	%		54.0	%
Calculated fair value per PSU:
Awards Issued on January 1, 2019	$	6.76		$	5.86		$	5.11