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Long-Term Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2023

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 EIP, which are reflected in the accompanying Unaudited Condensed Consolidated Statements of Net Income for the periods presented (in thousands):

​

​	​	​	​	​	​	​	​
​		For the Three Months Ended
​	​	March 31,					​
​	​	2023		​	2022		​
Equity classified awards	​		​	​		​	​
TSUs	​	​	898	​	​	591	​
PSUs and PRSUs	​		43	​		53	​
Board RSUs	​		—	​		4	​
​	​	$	941	​	$	648	​

TSUs [Member]

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

Summary of Information Regarding Restricted Stock Unit Awards

​

​	​	​	​	​	​
​		​		Weighted-
​	​	​	​	Average Grant-
​	​	Number of	​	Date Fair Value
​	​	Units	​	per Unit (1)
TSUs outstanding at December 31, 2022		1,502,556	​	$	3.82
Granted (2)		457,477	​	$	8.91
Forfeited		(59,679)	​	$	6.22
Vested		(592,696)	​	$	3.57
TSUs outstanding at March 31, 2023		1,307,658	​	$	5.61

(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, 2023 was $4.1 million based on a grant date market price of $8.91 per share.

PRSU [Member]

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

Ranges for the Assumptions Used in Monte Carlo Model for PRSUs Granted

​

​	​	​	​
​	​	2023	​
Expected volatility	​	119.2	%
Dividend yield	​	0.00	%
Risk-free interest rate	​	3.74	%

​

PSUs and PRSUs [Member]

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

Summary of Information Regarding Restricted Stock Unit Awards

​

​	​	​	​	​	​
​		​		Weighted-
​	​	​	​	Average Grant-
​	​	Number of	​	Date Fair Value
​	​	Units	​	per Unit (1)
PSUs and PRSUs outstanding at December 31, 2022		380,512	​	$	4.28
Granted (2)		209,778	​	$	10.30
Forfeited		(144,567)	​	$	6.55
Vested		(154,680)	​	$	2.20
PSUs and PRSUs outstanding at March 31, 2023		291,043	​	$	8.61

(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 PRSUs issued for the three months ended March 31, 2023 was $2.2 million based on a calculated fair value price ranging from $1.27 to $15.04 per share.

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