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Stock-based Compensation Plans (Tables)
12 Months Ended
Dec. 31, 2020
Allocation of Stock-Based Compensation by Functional Category The following table details the amount of stock-based compensation that is allocated to functional expense categories for each of the years in the three-year period ended December 31, 2020 (in thousands):

 

 

2020

 

 

2019

 

  

2018

 

Direct operating expense

$

1,078

  

 

$

1,928

  

  

$

2,109

  

Brokered natural gas and marketing expense

 

1,416

 

 

 

1,856

 

  

 

1,452

 

Exploration expense

 

1,279

 

 

 

1,566

 

  

 

1,921

 

General and administrative expense

 

32,905

  

 

 

35,061

 

  

 

43,806

 

Termination costs

 

2,165

 

 

 

1,971

 

 

 

 

Total stock-based compensation

$

38,843

  

 

$

42,382

  

  

$

49,288

  

 

Restricted Stock and Restricted Stock Units Outstanding The following is a summary of the status of our non-vested restricted stock outstanding at December 31, 2020:

 

Restricted Stock
Equity Awards

 

  

Restricted Stock
Liability Awards

 

 

Shares

 

 

Weighted
Average Grant
Date Fair Value

 

  

Shares

 

 

Weighted
Average Grant
Date Fair Value

 

Outstanding at December 31, 2019

 

2,002,239

 

 

 $

12.32

 

 

 

411,126

 

 

 $

10.94

 

Granted

 

4,462,711

 

 

 

3.42

 

 

 

3,535,093

 

 

 

3.18

 

Vested

 

(3,063,652

)

 

 

6.93

 

 

 

(2,678,013

)

 

 

3.94

 

Forfeited

 

(585,438

)

 

 

8.03

 

 

 

(81,570

)

 

 

3.02

 

Outstanding at December 31, 2020

 

2,815,860

 

 

$

4.97

 

 

 

1,186,636

 

 

$

4.18

 

Schedule of Share Based Payment Award Performance Stock Awards Valuation Assumptions The following assumptions were used to estimate the fair value of the TSR-PSUs granted during the years ended December 31, 2020, 2019 and 2018:

 

  

Year Ended December 31, 2019

 

 

  

2020

 

  

2019

 

 

2018

 

Risk-free interest rate

 

 

1.4

%

 

 

2.44

%

 

 

2.42

%

Expected annual volatility

 

 

65

%

 

 

46

%

 

 

48

%

Grant date fair value per unit

 

$

3.85

 

 

$

11.34

 

 

$

18.51

 

Summary of Change in Post Retirement Benefit Obligation The change in our post-retirement benefit obligation is as follows (in thousands):

 Change in Benefit Obligation:

 


2020

 

 


2019

 

Benefit obligation at beginning of year

 

 $

1,957

 

 

 $

1,355

 

Service cost

 

 

80

 

 

 

88

 

Interest cost

 

 

50

 

 

 

68

 

Actuarial (gain) loss

 

 

(39

)

 

 

532

 

Benefits paid

 

 

(95

)

 

 

(86

)

Benefit obligation at end of year

 

$

1,953

 

 

$

1,957

 

 

 

 

 

 

 

 

 

 

Amounts recognized in the consolidated balance sheet:

 

 

 

 

 

 

 

 

Long-term liabilities

 

$

1,953

 

 

$

1,957

 

 

 

 

 

 

 

 

 

 

Components of Net Periodic Post Retirement Benefit Cost:

 

 

 

 

 

 

 

 

Service cost

 

$

80

 

 

$

88

 

Interest cost

 

 

50

 

 

 

68

 

Amortization of prior service cost

 

 

369

 

 

 

369

 

Net periodic post retirement costs (recognized in general and administrative expense)

 

$

499

 

 

$

525

 

 

 

 

 

 

 

 

 

 

Other Changes in Benefit Obligations in Other Comprehensive Income (Loss):

 

 

 

 

 

 

 

 

Net (gain) loss

 

$

(39

)

 

$

532

 

Prior service cost

 

 

 

 

 

 

Amortization of prior service cost

 

 

(369

)

 

 

(369

)

Total recognized in other comprehensive (loss) income

 

$

(408

)

 

$

163

 

Total recognized in net periodic benefit cost and other comprehensive income

 

$

91

 

 

$

688

 

Summary of Assumptions Used to Determine Benefit Obligation

The following summarizes the assumptions used to determine the benefit obligation at December 31, 2020 and 2019:

 

 

December 31,

2020

 

 

 

December 31,

2019

 

Weighted average assumptions used to determine benefit obligation:

 

 

 

 

 

 

 

 

 

Discount rate

 

 

1.9

%

 

 

 

2.9

%

Assumed weighted average healthcare cost trend rates:

 

 

 

 

 

 

 

 

 

Initial healthcare trend rate

 

 

6.5

%

 

 

 

6.5

%

Ultimate trend rate

 

 

4.5

%

 

 

 

4.5

%

Year ultimate trend rate reached

 

 

2024

 

 

 

 

2023

 

Performance-based PG-PSUs and RG-PSUs  
Summary of Non-Vested Awards Activities The following is a summary of our non-vested PG/RG-PSUs award activities at December

 

 

 

 

 

Number of
Units

 

 

 

Weighted

Average Grant

Date Fair Value

 

Outstanding at December 31, 2019

 

881,573

 

 

$

11.70

 

Units granted (a)

 

777,847

 

 

 

2.33

 

Vested

 

(101,150

)

 

 

15.32

 

Forfeited (b)

 

(459,168

)

 

 

2.33

 

Outstanding at December 31, 2020

 

1,099,102

 

 

$

5.92

 

(a) Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero and 200% depending on achievement of specifically identified performance targets.

(b) For RG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the performance metric is not expected to be met and are considered forfeited. For PG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the payout is estimated at 23% with the remainder considered to be forfeited.

Performance Based TSR - PSUs  
Summary of Non-Vested Awards Activities

The following is a summary of our non-vested TSR PSUs award activities:

 

 


Number of Units

 

 

Weighted
Average Grant Date Fair Value

 

Outstanding at December 31, 2019

 

 

993,452

 

 

$

19.00

 

Granted (a)

 

 

610,155

 

 

 

3.85

 

Vested and issued (b)

 

 

(278,184

)

 

 

26.12

 

Forfeited

 

 

(75,899

)

 

 

26.66

 

Outstanding at December 31, 2020

 

 

1,249,524

 

 

$

9.55

 

(a) These amounts reflect the number of performance units granted. The actual payout of shares may be between zero and 200% of the performance units granted depending on the total shareholder return ranking compared to our peer companies at the vesting date.

(b) Includes 278,184 TSR-PSUs awards issued related to 2017 performance where the return on our common stock was in the 60th percentile for the March 2017 grant and the 80th percentile for the May 2017 grant. The remaining 2017 awards were considered to be forfeited.