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Share-Based Compensation | 9 Months Ended
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Sep. 30, 2020
Share-based Payment Arrangement [Abstract] |
Share-Based Compensation | Share-Based Compensation Our non-employee directors and key employees are granted share-based awards through our SICP. We record these share-based awards as compensation costs over the respective service period for which services are received in exchange for an award of equity or equity-based compensation. The compensation cost is based primarily on the fair value of the shares awarded, using the estimated fair value of each share on the date it was granted and the number of shares to be issued at the end of the service period. The table below presents the amounts included in net income related to share-based compensation expense for the three and nine months ended September 30, 2020 and 2019:
|  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30,
|  | 2020 |  | 2019 |  | 2020 |  | 2019
(in thousands) |  |  |  |  |  |  |  |
Awards to non-employee directors |  | $ | 188 |  |  | $ | 158 |  |  | $ | 545 |  |  | $ | 463 |
Awards to key employees |  | 1,144 |  |  | 1,052 |  |  | 3,109 |  |  | 1,842 |
Total compensation expense |  | 1,332 |  |  | 1,210 |  |  | 3,654 |  |  | 2,305 |
Less: tax benefit |  | (348) |  |  | (315) |  |  | (955) |  |  | (600) |
Share-based compensation amounts included in net income |  | $ | 984 |  |  | $ | 895 |  |  | $ | 2,699 |  |  | $ | 1,705 |
Non-employee Directors Shares granted to non-employee directors are issued in advance of the directors’ service periods and are fully vested as of the date of the grant. We record a deferred expense equal to the fair value of the shares issued and amortize the expense equally over a service period of one year. In May 2020, after the most recent election of directors, each of our non-employee directors received an annual retainer of 887 shares of common stock under the SICP for service as a director through the 2021 Annual Meeting of Stockholders; accordingly, 8,870 shares, with a weighted average fair value of $84.47 per share, were issued and vested in 2020. At September 30, 2020, there was approximately $0.4 million of unrecognized compensation expense related to shares granted to non-employee directors. This expense will be recognized over the remaining service period ending on the date of the 2021 Annual Meeting of Stockholders. In January 2020, a newly appointed member of the Board of Directors received a pro-rated retainer of 254 shares of common stock under the SICP to serve as a non-employee director through the 2020 Annual Meeting of Stockholders. The shares awarded to the non-employee director immediately vested upon issuance in January 2020, had a weighted average fair value of $95.83 per share, and the expense was recognized over the remaining service period ending on the date of the 2020 Annual Meeting of Stockholders. Key Employees The table below presents the summary of the stock activity for awards to key employees for the nine months ended September 30, 2020:
|  | Number of Shares |  | Weighted Average Fair Value
Outstanding—December 31, 2019 |  | 157,817 |  |  | $ | 80.28 |
Granted |  | 69,345 |  |  | $ | 92.78 |
Vested |  | (35,651) |  |  | $ | 66.48 |
Expired |  | (5,302) |  |  | $ | 65.32 |
Outstanding—September 30, 2020 |  | 186,209 |  |  | $ | 86.98 |
In February 2020, our Board of Directors granted awards of 69,345 shares of common stock to key employees under the SICP. The shares granted are multi-year awards that will vest at the end of the three-year service period ending December 31, 2022. All of these stock awards are earned based upon the successful achievement of long-term financial results, which comprise market-based and performance-based conditions or targets. The fair value of each performance-based condition or target is equal to the market price of our common stock on the grant date of each award. For the market-based conditions, we used the Monte Carlo valuation to estimate the fair value of each market-based award granted. In March 2020, upon the appointment of certain of our executive officers, we withheld shares with a value at least equivalent to each such executive officer’s minimum statutory obligation for applicable income and other employment taxes related to shares that we awarded in February 2020 for the performance period ended December 31, 2019, remitted the cash to the appropriate taxing authorities, and paid the balance of such awarded shares to each such executive officer. We withheld 10,319 shares, based on the value of the shares on their award date. Total combined payments for the employees’ tax obligations to the taxing authorities were approximately $1.0 million. At September 30, 2020, the aggregate intrinsic value of the SICP awards granted to key employees was approximately $15.7 million. At September 30, 2020, there was approximately $4.9 million of unrecognized compensation cost related to these awards, which is expected to be recognized as expense for the remainder of 2020 through 2022. Stock Options There were no stock options outstanding or issued during the nine months ended September 30, 2020 and 2019.

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- Definition The entire disclosure for share-based payment arrangement. + 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 + Details
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