Restricted Stock, Performance Share and Cash Awards	9 Months Ended
Sep. 30, 2015
Text Block [Abstract]
Restricted Stock, Performance Share and Cash Awards	10. Restricted Stock, Performance Share and Cash Awards Restricted Stock Awards As discussed in Note 8 to these unaudited consolidated financial statements, on May 13, 2014, our stockholders approved the LTIP, which replaced our previous stockholder-approved 2011 LTIP. The LTIP provides for the grant of a stock award either as restricted stock or as restricted stock units. 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 compensation committee may grant unrestricted shares of common stock or units representing the right to receive shares of common stock to employees who have attained age 62. 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 2.0 million. At September 30, 2015, 1.5 million shares were available for grant under the LTIP for such awards. In the first quarter of each of 2015 and 2014, we granted 362,600 and 323,600 restricted stock units, respectively, to employees under the LTIP, with an aggregate fair value of $16.7 million and $15.2 million, respectively, at the date of grant. These 2015 and 2014 awards of restricted stock units vest as follows: 362,600 units granted in first quarter 2015 and 323,600 units granted in first quarter 2014, vest in full based on continued employment through March 11, 2019 and March 12, 2018, respectively. In the third quarter of 2014, we granted 33,741 restricted stock units to employees with an aggregate fair value of $1.5 million at the date of grant. These grants vest at the rate of 34%, 33% and 33% on the anniversary date of the grant in 2015, 2016 and 2017. For certain of our executive officers age 55 or older, restricted stock units awarded in 2015 and 2014 are no longer 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 September 30, 2015 and 2014, we recognized $3.2 million and $3.1 million, respectively, to compensation expense related to restricted stock unit awards granted in 2006 through 2015. During the nine-month periods ended September 30, 2015 and 2014, we recognized $10.7 million and $9.6 million, respectively, to compensation expense related to restricted stock unit awards granted in 2006 through 2015. The total intrinsic value of unvested restricted stock units at September 30, 2015 and 2014 was $57.3 million and $55.0 million, respectively. During the nine-month periods ended September 30, 2015 and 2014, equity awards (including accrued dividends) with an aggregate fair value of $10.2 million and $9.7 million were vested and distributed to employees under this plan. Performance Share Awards On March 11, 2015 and March 12, 2014, pursuant to the LTIP, the compensation committee approved 53,900 and 48,800, respectively of provisional performance unit awards, with an aggregate fair value of $2.5 million and $2.3 million, respectively, for future grants to our officers. Each performance unit award was equivalent to the value of one share of our common stock on the date such provisional award was approved. These awards are subject to a one-year performance period based on our financial performance and a two-year vesting period. At the discretion of the compensation committee and determined based on our performance, the eligible officer will be granted a percentage of the provisional performance unit award that equates to the EBITAC growth achieved (as specified in the applicable grant agreement). 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 2015 and 2014 provisional awards will fully vest based on continuous employment through January 1, 2018 and January 1, 2017, respectively, and will be settled in shares of our common stock on a one-for-one basis as soon as practicable in 2018 and 2017, respectively. For certain of our executive officers age 55 or older, awards granted in 2015 and 2014 are no longer subject to forfeiture upon such officers’ departure from the company after two years from the date of grant. If an eligible employee leaves us prior to the vesting date, the entire award will be forfeited. Cash Awards On March 11, 2015, pursuant to our Performance Unit Program (which we refer to as the Program), the compensation committee approved provisional cash awards of $14.6 million in the aggregate for future grants to our officers and key employees that are denominated in units (315,000 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 two-year vesting period. 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 2015 provisional award will fully vest based on continuous employment through January 1, 2018. For certain of our executive officers age 55 or older, awards granted under the Program in 2015 are no longer subject to forfeiture upon such officers’ departure from the company after two years from the date of the provisional award. The ultimate award value will be equal to the trailing twelve-month price of our common stock on December 31, 2017, 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 2018. 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 nine-month period ended September 30, 2015 related to the 2015 provisional award under the Program. On March 12, 2014, pursuant to the Program, the compensation committee approved provisional cash awards of $10.8 million in the aggregate for future grant to our officers and key employees that are denominated in units (229,000 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 2014 provisional awards were similar to the terms of the 2015 provisional awards. Based on our performance for 2014, we granted 220,000 units under the Program in first quarter 2015 that will fully vest on January 1, 2017. During the three-month period ended September 30, 2015, we recognized $1.2 million to compensation expense related to these awards. During the nine-month period ended September 30, 2015, we recognized $3.7 million to compensation expense related to these awards. We did not recognize any compensation expense during 2014 related to the 2014 awards. On March 13, 2013, pursuant to the Program, the compensation committee approved provisional cash awards of $10.5 million in the aggregate for future grant to our officers and key employees that are denominated in units (269,000 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 2013 provisional awards were similar to the terms of the 2015 provisional awards. Based on our performance for 2013, we granted 263,000 units under the Program in first quarter 2014 that will fully vest on January 1, 2016. During the three-month periods ended September 30, 2015 and September 30, 2014, we recognized $1.3 million and $1.5 million, respectively, to compensation expense related to the 2013 awards. During the nine-month periods ended September 30, 2015 and September 30, 2014, we recognized $4.3 million and $4.5 million, respectively, to compensation expense related to the 2013 awards. On March 16, 2012, pursuant to the Program, the compensation committee approved provisional cash awards of $13.1 million in the aggregate for future grant to our officers and key employees that are denominated in units (368,000 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 2012 provisional awards were similar to the terms of the 2015 provisional awards. Based on our performance for 2012, we granted 365,000 units under the Program in first quarter 2013 that fully vested on January 1, 2015. During the three-month period ended September 30, 2014 we recognized $1.8 million of compensation expense related to the 2012 awards. During the nine-month period ended September 30, 2014 we recognized $6.3 million of compensation expense related to the 2012 awards. We did not recognize any compensation expense during 2015 related to the 2012 awards. During the nine-month period ended September 30, 2015, cash awards related to the 2012 provisional award with an aggregate fair value of $15.8 million (0.3 million units in the aggregate) were vested and distributed to employees under the Program.

10. Restricted Stock, Performance Share and Cash Awards

Restricted Stock Awards

As discussed in Note 8 to these unaudited consolidated financial statements, on May 13, 2014, our stockholders approved the LTIP, which replaced our previous stockholder-approved 2011 LTIP. The LTIP provides for the grant of a stock award either as restricted stock or as restricted stock units. 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 compensation committee may grant unrestricted shares of common stock or units representing the right to receive shares of common stock to employees who have attained age 62.

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 2.0 million. At September 30, 2015, 1.5 million shares were available for grant under the LTIP for such awards.

In the first quarter of each of 2015 and 2014, we granted 362,600 and 323,600 restricted stock units, respectively, to employees under the LTIP, with an aggregate fair value of $16.7 million and $15.2 million, respectively, at the date of grant. These 2015 and 2014 awards of restricted stock units vest as follows: 362,600 units granted in first quarter 2015 and 323,600 units granted in first quarter 2014, vest in full based on continued employment through March 11, 2019 and March 12, 2018, respectively. In the third quarter of 2014, we granted 33,741 restricted stock units to employees with an aggregate fair value of $1.5 million at the date of grant. These grants vest at the rate of 34%, 33% and 33% on the anniversary date of the grant in 2015, 2016 and 2017. For certain of our executive officers age 55 or older, restricted stock units awarded in 2015 and 2014 are no longer 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 September 30, 2015 and 2014, we recognized $3.2 million and $3.1 million, respectively, to compensation expense related to restricted stock unit awards granted in 2006 through 2015. During the nine-month periods ended September 30, 2015 and 2014, we recognized $10.7 million and $9.6 million, respectively, to compensation expense related to restricted stock unit awards granted in 2006 through 2015. The total intrinsic value of unvested restricted stock units at September 30, 2015 and 2014 was $57.3 million and $55.0 million, respectively. During the nine-month periods ended September 30, 2015 and 2014, equity awards (including accrued dividends) with an aggregate fair value of $10.2 million and $9.7 million were vested and distributed to employees under this plan.

Performance Share Awards

On March 11, 2015 and March 12, 2014, pursuant to the LTIP, the compensation committee approved 53,900 and 48,800, respectively of provisional performance unit awards, with an aggregate fair value of $2.5 million and $2.3 million, respectively, for future grants to our officers. Each performance unit award was equivalent to the value of one share of our common stock on the date such provisional award was approved. These awards are subject to a one-year performance period based on our financial performance and a two-year vesting period. At the discretion of the compensation committee and determined based on our performance, the eligible officer will be granted a percentage of the provisional performance unit award that equates to the EBITAC growth achieved (as specified in the applicable grant agreement). 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 2015 and 2014 provisional awards will fully vest based on continuous employment through January 1, 2018 and January 1, 2017, respectively, and will be settled in shares of our common stock on a one-for-one basis as soon as practicable in 2018 and 2017, respectively. For certain of our executive officers age 55 or older, awards granted in 2015 and 2014 are no longer subject to forfeiture upon such officers’ departure from the company after two years from the date of grant. If an eligible employee leaves us prior to the vesting date, the entire award will be forfeited.

Cash Awards

On March 11, 2015, pursuant to our Performance Unit Program (which we refer to as the Program), the compensation committee approved provisional cash awards of $14.6 million in the aggregate for future grants to our officers and key employees that are denominated in units (315,000 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 two-year vesting period. 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 2015 provisional award will fully vest based on continuous employment through January 1, 2018. For certain of our executive officers age 55 or older, awards granted under the Program in 2015 are no longer subject to forfeiture upon such officers’ departure from the company after two years from the date of the provisional award. The ultimate award value will be equal to the trailing twelve-month price of our common stock on December 31, 2017, 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 2018. 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 nine-month period ended September 30, 2015 related to the 2015 provisional award under the Program.

On March 12, 2014, pursuant to the Program, the compensation committee approved provisional cash awards of $10.8 million in the aggregate for future grant to our officers and key employees that are denominated in units (229,000 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 2014 provisional awards were similar to the terms of the 2015 provisional awards. Based on our performance for 2014, we granted 220,000 units under the Program in first quarter 2015 that will fully vest on January 1, 2017. During the three-month period ended September 30, 2015, we recognized $1.2 million to compensation expense related to these awards. During the nine-month period ended September 30, 2015, we recognized $3.7 million to compensation expense related to these awards. We did not recognize any compensation expense during 2014 related to the 2014 awards.

On March 13, 2013, pursuant to the Program, the compensation committee approved provisional cash awards of $10.5 million in the aggregate for future grant to our officers and key employees that are denominated in units (269,000 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 2013 provisional awards were similar to the terms of the 2015 provisional awards. Based on our performance for 2013, we granted 263,000 units under the Program in first quarter 2014 that will fully vest on January 1, 2016. During the three-month periods ended September 30, 2015 and September 30, 2014, we recognized $1.3 million and $1.5 million, respectively, to compensation expense related to the 2013 awards. During the nine-month periods ended September 30, 2015 and September 30, 2014, we recognized $4.3 million and $4.5 million, respectively, to compensation expense related to the 2013 awards.

On March 16, 2012, pursuant to the Program, the compensation committee approved provisional cash awards of $13.1 million in the aggregate for future grant to our officers and key employees that are denominated in units (368,000 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 2012 provisional awards were similar to the terms of the 2015 provisional awards. Based on our performance for 2012, we granted 365,000 units under the Program in first quarter 2013 that fully vested on January 1, 2015. During the three-month period ended September 30, 2014 we recognized $1.8 million of compensation expense related to the 2012 awards. During the nine-month period ended September 30, 2014 we recognized $6.3 million of compensation expense related to the 2012 awards. We did not recognize any compensation expense during 2015 related to the 2012 awards.

During the nine-month period ended September 30, 2015, cash awards related to the 2012 provisional award with an aggregate fair value of $15.8 million (0.3 million units in the aggregate) were vested and distributed to employees under the Program.