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Compensation Plans | 9 Months Ended
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Sep. 30, 2020
Share-based Payment Arrangement [Abstract] |
Compensation Plans | Note 7 - Compensation Plans Equity Incentive Compensation Plan As of September 30, 2020, 4.4 million shares of common stock were available for grant under the Company’s Equity Incentive Compensation Plan (“Equity Plan”). Performance Share Units The Company grants performance share units (“PSUs”) to eligible employees as part of its Equity Plan. The number of shares of the Company’s common stock issued to settle PSUs ranges from zero to two times the number of PSUs awarded and is determined based on certain criteria over a three-year performance period. PSUs generally vest on the third anniversary of the date of the grant or upon other triggering events as set forth in the Equity Plan. For PSUs granted in 2017, which the Company determined to be equity awards, the settlement criteria included a combination of the Company’s Total Shareholder Return (“TSR”) on an absolute basis, and the Company’s TSR relative to the TSR of certain peer companies over the associated three-year performance period. The fair value of the PSUs granted in 2017 was measured on the grant date using a stochastic Monte Carlo simulation using geometric Brownian motion (“GBM Model”). As these awards depend entirely on market-based settlement criteria, the associated compensation expense is recognized on a straight-line basis within general and administrative expense and exploration expense over the vesting periods of the respective awards. For PSUs granted in 2018 and 2019, the settlement criteria include a combination of the Company’s TSR relative to the TSR of certain peer companies and the Company’s cash return on total capital invested (“CRTCI”) relative to the CRTCI of certain peer companies over the associated three-year performance period. In addition to these performance criteria, the award agreements for these grants also stipulate that if the Company’s absolute TSR is negative over the three-year performance period, the maximum number of shares of common stock that can be issued to settle outstanding PSUs is capped at one times the number of PSUs granted on the award date, regardless of the Company’s TSR and CRTCI performance relative to its peer group. The fair value of the PSUs granted in 2018 and 2019 was measured on the applicable grant dates using the GBM Model, with the assumption that the associated CRTCI performance condition will be met at the target amount at the end of the respective performance periods. Compensation expense for PSUs is recognized within general and administrative expense and exploration expense over the vesting periods of the respective awards. As these awards depend on a combination of performance-based settlement criteria and market-based settlement criteria, compensation expense may be adjusted in future periods as the number of units expected to vest increases or decreases based on the Company’s expected CRTCI performance relative to the applicable peer companies. The Company records compensation expense associated with the issuance of PSUs based on the fair value of the awards as of the date of grant. Total compensation expense recorded for PSUs was $1.6 million and $2.9 million for the three months ended September 30, 2020, and 2019, respectively, and $7.0 million and $8.6 million for the nine months ended September 30, 2020, and 2019, respectively. As of September 30, 2020, there was $8.1 million of total unrecognized compensation expense related to non-vested PSU awards, which is being amortized through 2022. A summary of the status and activity of non-vested PSUs for the nine months ended September 30, 2020, is presented in the following table:
| PSUs (1) |  | Weighted-Average Grant-Date Fair Value
Non-vested at beginning of year | 2,022,585 |  | $ | 16.87 |
Granted | — |  | $ | — |
Vested | (791,962) |  | $ | 15.85 |
Forfeited | (45,731) |  | $ | 16.69 |
Non-vested at end of quarter | 1,184,892 |  | $ | 17.56 |
____________________________________________ (1) The number of shares of common stock assumes a multiplier of one. The actual final number of shares of common stock to be issued will range from zero to two times the number of PSUs awarded depending on the three-year performance multiplier. During the nine months ended September 30, 2020, the Company settled 791,962 PSUs that were granted in 2017, which earned a 0.9 times multiplier. The Company and the majority of grant participants mutually agreed to net share settle a portion of the awards to cover income and payroll tax withholdings, as provided for in the Equity Plan and applicable award agreements. After withholding 215,451 shares to satisfy income and payroll tax withholding obligations that occurred upon delivery of the shares underlying those PSUs, 485,060 shares of the Company’s common stock were issued in accordance with the terms of the applicable PSU awards. Employee Restricted Stock Units The Company grants restricted stock units (“RSUs”) to eligible persons as part of its Equity Plan. Each RSU represents a right to receive one share of the Company’s common stock upon settlement of the award at the end of the specified vesting period. RSUs generally vest one-third of the total grant on each anniversary date of the grant over a three-year vesting period or upon other triggering events as set forth in the Equity Plan. The Company records compensation expense associated with the issuance of RSUs based on the fair value of the awards as of the date of grant. The fair value of an RSU is equal to the closing price of the Company’s common stock on the day of the grant. Compensation expense for RSUs is recognized within general and administrative expense and exploration expense over the vesting periods of the respective awards. Total compensation expense recorded for employee RSUs was $1.8 million and $2.9 million for the three months ended September 30, 2020, and 2019, respectively and $7.1 million and $8.4 million for the nine months ended September 30, 2020, and 2019, respectively. As of September 30, 2020, there was $8.6 million of total unrecognized compensation expense related to non-vested RSU awards, which is being amortized through 2022. A summary of the status and activity of non-vested RSUs granted to employees for the nine months ended September 30, 2020, is presented in the following table:
| RSUs |  | Weighted-Average Grant-Date Fair Value
Non-vested at beginning of year | 1,532,131 |  | $ | 16.01 |
Granted | — |  | $ | — |
Vested | (744,325) |  | $ | 16.74 |
Forfeited | (77,814) |  | $ | 15.67 |
Non-vested at end of quarter | 709,992 |  | $ | 15.29 |
During the nine months ended September 30, 2020, the Company settled 744,325 RSUs that related to awards granted in previous years. The Company and the majority of grant participants mutually agreed to net share settle a portion of the awards to cover income and payroll tax withholdings, as provided for in the Equity Plan and applicable award agreements. As a result, 209,126 shares were withheld to satisfy income and payroll tax withholding obligations that occurred upon delivery of the shares underlying those RSUs. Director Shares During the second quarters of 2020, and 2019, the Company issued 267,576 and 96,719 shares, respectively, of its common stock to its non-employee directors under the Equity Plan. Shares issued during the second quarter of 2020 will fully vest on December 31, 2020. Shares issued during the second quarter of 2019 fully vested on December 31, 2019. The Company did not issue any director shares during the third quarters of 2020 or 2019. Employee Stock Purchase Plan Under the Company’s Employee Stock Purchase Plan (“ESPP”), eligible employees may purchase shares of the Company’s common stock through payroll deductions of up to 15 percent of eligible compensation, without accruing in excess of $25,000 in value from purchases for each calendar year. The purchase price of the stock is 85 percent of the lower of the fair market value of the stock on either the first or last day of the purchase period. The ESPP is intended to qualify under Section 423 of the Internal Revenue Code. There were 297,013 and 184,079 shares issued under the ESPP during the nine months ended September 30, 2020, and 2019, respectively. Total proceeds to the Company for the issuance of these shares was $947,000 and $2.0 million for the nine months ended September 30, 2020, and 2019, respectively. The fair value of ESPP grants is measured at the date of grant using the Black-Scholes option-pricing model.

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI http://asc.fasb.org/topic&trid=2127225 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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