Restricted Stock, Performance Share and Cash Awards	6 Months Ended
Jun. 30, 2020
Text Block [Abstract]
Restricted Stock, Performance Share and Cash Awards	11. Restricted Stock, Performance Share and Cash Awards Restricted Stock Awards As discussed in Note 9 to these unaudited consolidated financial statements, on May 16, 2017, our stockholders approved the LTIP, which replaced our previous stockholder-approved 2014 LTIP. The LTIP provides for the grant of a stock award either as restricted stock or as restricted stock units to officers, employees and non-employee directors. In either case, the compensation committee may determine that the award will be subject to the attainment of performance measures over an established performance period. Stock awards and the related dividend equivalents are non-transferable and subject to forfeiture if the holder does not remain continuously employed with us during the applicable restriction period or, in the case of a performance-based award, if applicable performance measures are not attained. The compensation committee will determine all of the terms relating to the satisfaction of performance measures and the termination of a restriction period, or the forfeiture and cancellation of a restricted stock award upon a termination of employment, whether by reason of disability, retirement, death or any other reason. The agreements awarding restricted stock units under the LTIP will specify whether such awards may be settled in shares of our common stock, cash or a combination of shares and cash and whether the holder will be entitled to receive dividend equivalents, on a current or deferred basis, with respect to such award. Prior to the settlement of a restricted stock unit, the holder of a restricted stock unit will have no rights as a stockholder of the company. The maximum number of shares available under the LTIP for restricted stock, restricted stock units and performance unit awards settled with stock (i.e., all awards other than stock options and stock appreciation rights) is 4.0 million. At June 30, 2020, 2.2 million shares were available for grant under the LTIP for such awards. In the first quarters of 2020 and 2019, we granted 405,900 and 399,900 restricted stock units, respectively, to employees under the LTIP, with an aggregate fair value of $34.9 million and $31.8 million, respectively, at the date of grant. These 2020 and 2019 awards of restricted stock units vest as follows: 405,900 units granted in the first quarter of 2020 and 399,900 units granted in the first quarter of 2019, vest in full based on continued employment through March 12, 2025 and March 14, 2024, respectively. For our executive officers age 55 or older, restricted stock units are not subject to forfeiture upon such officers’ departure from the company after two years from the date of grant. We account for restricted stock awards at historical cost, which equals its fair market value at the date of grant, which is amortized to compensation expense ratably over the vesting period of the participants. Future changes in the fair value of our common stock that is owed to the participants do not have any impact on the amounts recorded in our consolidated financial statements. During the three-month periods ended June 30, 2020 and 2019, we recognized $9.5 million and $8.4 million, respectively, to compensation expense related to restricted stock unit awards granted in 2012 through 2020. During the six-month periods ended June 30, 2020 and 2019, we recognized $20.1 million and $14.8 million, respectively, to compensation expense related to restricted stock unit awards granted in 2012 through 2020. The total intrinsic value of unvested restricted stock units at June 30, 2020 and 2019 was $228.5 million and $199.7 million, respectively. During the six-month period ended June 30, 2020, equity awards (including accrued dividends) with an aggregate value of $30.6 million, were vested and distributed to employees under this plan. During the six-month period ended June 30, 2019 equity awards with an aggregate fair value of $2.0 million, were vested and distributed to employees under this plan Performance Share Awards On March 12, 2020 and March 14, 2019, pursuant to the LTIP, the compensation committee approved 82,500 and 73,600, respectively, of provisional performance share awards, with an aggregate fair value of $7.1 million and $5.8 million, respectively, for future grants to our officers and key employees. Each performance share award was equivalent to the value of one share of our common stock on the date such provisional award was approved. At the end of the performance period, eligible participants will receive a number of earned shares based on the growth in adjusted EBITDAC per share (as defined in our 2020 Proxy Statement). Earned shares for the 2020 and 2019 provisional awards will fully vest based on continuous employment through March 12, 2023 and March 14, 2022, respectively, and will be settled in unrestricted shares of our common stock on a one-for-one basis as soon as practicable thereafter. The 2020 and 2019 awards are subject to a three-year performance period that began on January 1, 2020 and 2019, respectively, and vest on the three-year anniversary of the date of grant (March 12, 2023 and March 14, 2022). For certain of our executive officers age 55 or older, awards are no longer subject to forfeiture upon such officers’ departure from the company after two years from the date of grant. During the six-month periods ended June 30, 2020 and 2019, equity awards (including accrued dividends) with an aggregate fair value of $12.5 million and $5.7 million, were vested and distributed to employees under this plan. Cash Awards On March 12, 2020, pursuant to our Performance Unit Program (which we refer to as the Program), the compensation committee approved provisional cash awards of $18.4 million in the aggregate for future grants to our officers and key employees that are denominated in units (213,000 units in the aggregate), each of which was equivalent to the value of one share of our common stock on the date the provisional award was approved. The Program consists of a one-year performance period based on our financial performance and a three-year vesting period measured from January 1 of the year of grant. At the discretion of the compensation committee and determined based on our performance, the eligible officer or key employee will be granted a percentage of the provisional cash award units that equates to the EBITAC growth achieved (as defined in the Program). At the end of the performance period, eligible participants will be granted a number of units based on achievement of the performance goal and subject to approval by the compensation committee. Granted units for the 2020 provisional award will fully vest based on continuous employment through January 1, 2023. The ultimate award value will be equal to the trailing twelve-month price of our common stock on December 31, 2022, multiplied by the number of units subject to the award, but limited to between 0.5 and 1.5 times the original value of the units determined as of the grant date. The fair value of the awarded units will be paid out in cash as soon as practicable in 2023. If an eligible employee leaves us prior to the vesting date, the entire award will be forfeited. We did not recognize any compensation expense during the six-month period ended June 30, 2020 related to the 2020 provisional award under the Program. On March 14, 2019, pursuant to the Program, the compensation committee approved provisional cash awards of $16.5 million in the aggregate for future grants to our officers and key employees that are denominated in units (206,800 units in the aggregate), each of which was equivalent to the value of one share of our common stock on the date the provisional award was approved. Terms of the 2019 provisional awards were similar to the terms of the 2020 provisional awards. Based on our performance for 2019, we granted 200,000 units under the Program in the first quarter of 2020 that will fully vest on January 1, 2022. During the three-month period ended June 30, 2020, we recognized $1.9 million to compensation expense related to these awards. During the six-month period ended June 30, 2020, we recognized $4.1 million to compensation expense related to these awards. We did not recognize any compensation expense during the six-month period ended June 30, 2019 related to the 2019 provisional award under the Program. On March 15, 2018, pursuant to the Program, the compensation committee approved provisional cash awards of $15.0 million in the aggregate for future grants to our officers and key employees denominated in units (219,000 units in the aggregate), each of which was equivalent to the value of one share of our common stock on the date the provisional award was approved. Terms of the 2018 provisional awards were similar to the terms of the 2019 provisional awards. Based on our performance, we granted 190,000 units under the Program in the first quarter of 2019 that will fully vest on January 1, 2021. During the three-month periods ended June 30, 2020 and 2019, we recognized $0.9 million and $2.2 million to compensation expense related to these 2018 awards, respectively. During the six-month periods ended June 30, 2020 and 2019, we recognized $3.5 million and $4.1 million, respectively, to compensation expense related to restricted stock unit awards granted in 2012 through 2020. On March 16, 2017, pursuant to the Program, the compensation committee approved provisional cash awards of $14.3 million in the aggregate for future grant to our officers and key employees denominated in units (255,000 units in the aggregate), each of which was equivalent to the value of one share of our common stock on the date the provisional awards were approved. Terms of the 2017 provisional awards were similar to the terms of the 2018 provisional awards. Based on our performance for 2017, we granted 242,000 units under the Program in the first quarter of 2018 that fully vested on January 1, 2020. During the three-month period ended June 30, 2019, we recognized $2.6 million to compensation expense related to these 2017 awards. During the six-month period ended June 30, 2019, we recognized $5.0 million to compensation expense related to these 2017 awards. During the six-month period ended June 30, 2020, cash awards related to the 2017 provisional award with an aggregate fair value of $18.9 million (221,600 units in the aggregate) were vested and distributed to employees under the Program. During the six-month period ended June 30, 2019, cash awards related to the 2016 provisional award with an aggregate fair value of $22.4 million (341,000 units in the aggregate) were vested and distributed to employees under the Program.

Restricted Stock, Performance Share and Cash Awards

6 Months Ended

Jun. 30, 2020

Restricted Stock, Performance Share and Cash Awards

11. Restricted Stock, Performance Share and Cash Awards

Restricted Stock Awards

As discussed in Note 9 to these unaudited consolidated financial statements, on May 16, 2017, our stockholders approved the LTIP, which replaced our previous stockholder-approved 2014 LTIP. The LTIP provides for the grant of a stock award either as restricted stock or as restricted stock units to officers, employees and non-employee directors. In either case, the compensation committee may determine that the award will be subject to the attainment of performance measures over an established performance period. Stock awards and the related dividend equivalents are non-transferable and subject to forfeiture if the holder does not remain continuously employed with us during the applicable restriction period or, in the case of a performance-based award, if applicable performance measures are not attained. The compensation committee will determine all of the terms relating to the satisfaction of performance measures and the termination of a restriction period, or the forfeiture and cancellation of a restricted stock award upon a termination of employment, whether by reason of disability, retirement, death or any other reason.

The agreements awarding restricted stock units under the LTIP will specify whether such awards may be settled in shares of our common stock, cash or a combination of shares and cash and whether the holder will be entitled to receive dividend equivalents, on a current or deferred basis, with respect to such award. Prior to the settlement of a restricted stock unit, the holder of a restricted stock unit will have no rights as a stockholder of the company. The maximum number of shares available under the LTIP for restricted stock, restricted stock units and performance unit awards settled with stock (i.e., all awards other than stock options and stock appreciation rights) is 4.0 million. At June 30, 2020, 2.2 million shares were available for grant under the LTIP for such awards.

In the first quarters of 2020 and 2019, we granted 405,900 and 399,900 restricted stock units, respectively, to employees under the LTIP, with an aggregate fair value of $34.9 million and $31.8 million, respectively, at the date of grant. These 2020 and 2019 awards of restricted stock units vest as follows: 405,900 units granted in the first quarter of 2020 and 399,900 units granted in the first quarter of 2019, vest in full based on continued employment through March 12, 2025 and March 14, 2024, respectively. For our executive officers age 55 or older, restricted stock units are not subject to forfeiture upon such officers’ departure from the company after two years from the date of grant.

We account for restricted stock awards at historical cost, which equals its fair market value at the date of grant, which is amortized to compensation expense ratably over the vesting period of the participants. Future changes in the fair value of our common stock that is owed to the participants do not have any impact on the amounts recorded in our consolidated financial statements. During the three-month periods ended June 30, 2020 and 2019, we recognized $9.5 million and $8.4 million, respectively, to compensation expense related to restricted stock unit awards granted in 2012 through 2020. During the six-month periods ended June 30, 2020 and 2019, we recognized $20.1 million and $14.8 million, respectively, to compensation expense related to restricted stock unit awards granted in 2012 through 2020. The total intrinsic value of unvested restricted stock units at June 30, 2020 and 2019 was $228.5 million and $199.7 million, respectively. During the six-month period ended June 30, 2020, equity awards (including accrued dividends) with an aggregate value of $30.6 million, were vested and distributed to employees under this plan. During the six-month period ended June 30, 2019 equity awards with an aggregate fair value of $2.0 million, were vested and distributed to employees under this plan

Performance Share Awards

On March 12, 2020 and March 14, 2019, pursuant to the LTIP, the compensation committee approved 82,500 and 73,600, respectively, of provisional performance share awards, with an aggregate fair value of $7.1 million and $5.8 million, respectively, for future grants to our officers and key employees. Each performance share award was equivalent to the value of one share of our common stock on the date such provisional award was approved. At the end of the performance period, eligible participants will receive a number of earned shares based on the growth in adjusted EBITDAC per share (as defined in our 2020 Proxy Statement). Earned shares for the 2020 and 2019 provisional awards will fully vest based on continuous employment through March 12, 2023 and March 14, 2022, respectively, and will be settled in unrestricted shares of our common stock on a one-for-one basis as soon as practicable thereafter. The 2020 and 2019 awards are subject to a three-year performance period that began on January 1, 2020 and 2019, respectively, and vest on the three-year anniversary of the date of grant (March 12, 2023 and March 14, 2022). For certain of our executive officers age 55 or older, awards are no longer subject to forfeiture upon such officers’ departure from the company after two years from the date of grant. During the six-month periods ended June 30, 2020 and 2019, equity awards (including accrued dividends) with an aggregate fair value of $12.5 million and $5.7 million, were vested and distributed to employees under this plan.

Cash Awards

On March 12, 2020, pursuant to our Performance Unit Program (which we refer to as the Program), the compensation committee approved provisional cash awards of $18.4 million in the aggregate for future grants to our officers and key employees that are denominated in units (213,000 units in the aggregate), each of which was equivalent to the value of one share of our common stock on the date the provisional award was approved. The Program consists of a one-year performance period based on our financial performance and a three-year vesting period measured from January 1 of the year of grant. At the discretion of the compensation committee and determined based on our performance, the eligible officer or key employee will be granted a percentage of the provisional cash award units that equates to the EBITAC growth achieved (as defined in the Program). At the end of the performance period, eligible participants will be granted a number of units based on achievement of the performance goal and subject to approval by the compensation committee. Granted units for the 2020 provisional award will fully vest based on continuous employment through January 1, 2023. The ultimate award value will be equal to the trailing twelve-month price of our common stock on December 31, 2022, multiplied by the number of units subject to the award, but limited to between 0.5 and 1.5 times the original value of the units determined as of the grant date. The fair value of the awarded units will be paid out in cash as soon as practicable in 2023. If an eligible employee leaves us prior to the vesting date, the entire award will be forfeited. We did not recognize any compensation expense during the six-month period ended June 30, 2020 related to the 2020 provisional award under the Program.

On March 14, 2019, pursuant to the Program, the compensation committee approved provisional cash awards of $16.5 million in the aggregate for future grants to our officers and key employees that are denominated in units (206,800 units in the aggregate), each of which was equivalent to the value of one share of our common stock on the date the provisional award was approved. Terms of the 2019 provisional awards were similar to the terms of the 2020 provisional awards. Based on our performance for 2019, we granted 200,000 units under the Program in the first quarter of 2020 that will fully vest on January 1, 2022. During the three-month period ended June 30, 2020, we recognized $1.9 million to compensation expense related to these awards. During the six-month period ended June 30, 2020, we recognized $4.1 million to compensation expense related to these awards. We did not recognize any compensation expense during the six-month period ended June 30, 2019 related to the 2019 provisional award under the Program.

On March 15, 2018, pursuant to the Program, the compensation committee approved provisional cash awards of $15.0 million in the aggregate for future grants to our officers and key employees denominated in units (219,000 units in the aggregate), each of which was equivalent to the value of one share of our common stock on the date the provisional award was approved. Terms of the 2018 provisional awards were similar to the terms of the 2019 provisional awards. Based on our performance, we granted 190,000 units under the Program in the first quarter of 2019 that will fully vest on January 1, 2021. During the three-month periods ended June 30, 2020 and 2019, we recognized $0.9 million and $2.2 million to compensation expense related to these 2018 awards, respectively. During the six-month periods ended June 30, 2020 and 2019, we recognized $3.5 million and $4.1 million, respectively, to compensation expense related to restricted stock unit awards granted in 2012 through 2020.

On March 16, 2017, pursuant to the Program, the compensation committee approved provisional cash awards of $14.3 million in the aggregate for future grant to our officers and key employees denominated in units (255,000 units in the aggregate), each of which was equivalent to the value of one share of our common stock on the date the provisional awards were approved. Terms of the 2017 provisional awards were similar to the terms of the 2018 provisional awards. Based on our performance for 2017, we granted 242,000 units under the Program in the first quarter of 2018 that fully vested on January 1, 2020. During the three-month period ended June 30, 2019, we recognized $2.6 million to compensation expense related to these 2017 awards. During the six-month period ended June 30, 2019, we recognized $5.0 million to compensation expense related to these 2017 awards.

During the six-month period ended June 30, 2020, cash awards related to the 2017 provisional award with an aggregate fair value of $18.9 million (221,600 units in the aggregate) were vested and distributed to employees under the Program. During the six-month period ended June 30, 2019, cash awards related to the 2016 provisional award with an aggregate fair value of $22.4 million (341,000 units in the aggregate) were vested and distributed to employees under the Program.