Stock-Based Compensation Plans

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

The Company's Second Amended and Restated 2009 Equity Incentive Plan (the “2009 Plan”) includes an authorization to issue shares of the Company's common stock, par value $0.01 per share. At December 31, 2020, the Company had 6,913,585 shares remaining available to issue under the 2009 Plan, exclusive of shares that may be issued to satisfy currently outstanding awards such as stock options or performance awards. In addition, any awards that were outstanding under the Company's 1994 Stock Option and Incentive Plan (the “1994 Plan”) on May 21, 2009, the date the Company adopted the 2009 Plan, that are subsequently forfeited, canceled, surrendered or terminated (other than by exercise) will become available for awards under the 2009 Plan. The 2009 Plan provides for various types of equity awards to associates, officers, non-employee directors and other key personnel of the Company and its subsidiaries. The types of awards that may be granted under the 2009 Plan include restricted stock, restricted stock units, stock options that qualify as incentive stock options (“ISOs”) under Section 422 of the Code, non-qualified stock options, stock appreciation rights and performance awards, among others. No grants of stock options and other awards will be made after May 15, 2027, and no grants of incentive stock options will be made after February 16, 2027.

Information with respect to stock options granted under the 2009 and 1994 Plans is as follows:


	2009 Plan shares	Weighted average exercise price per share		1994 Plan shares	Weighted average exercise price per share
Options Outstanding, December 31, 2017	149,973	$	126.77	7,778	$	48.60
Exercised	(32,756)	126.24		(7,778)	48.60
Granted (1)	6,995	161.10		—	—
Forfeited	—	—		—	—
Options Outstanding, December 31, 2018	124,212	$	128.84	—	$	—
Exercised	(109,804)	129.47		—	—
Granted	—	—		—	—
Forfeited	—	—		—	—
Options Outstanding, December 31, 2019	14,408	$	124.05	—	$	—
Exercised	(1,902)	89.17		—	—
Granted	—	—		—	—
Forfeited	—	—		—	—
Options Outstanding, December 31, 2020	12,506	$	129.35	—	$	—
Options Exercisable:
December 31, 2018	117,217	$	126.91	—	$	—
December 31, 2019	14,408	$	124.05	—	$	—
December 31, 2020	12,506	$	129.35	—	$	—

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(1) Options granted during the year ended December 31, 2018 are a result of recipient elections to receive a portion of earned performance awards and time-vesting restricted stock in the form of stock options.

The following summarizes the exercise prices and contractual lives of options outstanding as of December 31, 2020:


2009 Plan Number of Options	Range—Exercise Price			Weighted Average Remaining Contractual Term (in years)
1,387	$110.00	-	$119.99	0.1
11,119	$130.00	-	$139.99	1.8
12,506

Options outstanding and exercisable at December 31, 2020 had an intrinsic value of $389,000. Options exercisable had a weighted average contractual life of 1.6 years. The intrinsic value of options exercised under the 2009 Plan during 2020, 2019 and 2018 was $251,000, $7,970,000 and $3,016,000, respectively. There were no stock options granted in 2020, 2019 and 2018, other than those elected under the Company's performance award plan discussed below.

The Company has a compensation framework under which share-based compensation granted is composed of annual restricted stock awards for which one third of the award vests annually over a three-year period, and multi-year long term incentive performance awards. For annual restricted stock awards, in lieu of time-vesting restricted stock, the recipient may elect to receive up to 100% of the award value, in increments of 25%, in the form of stock options, for which one third of the award vests annually over a three-year period. Under the Company's multi-year long term incentive compensation framework, the Company grants a target number of performance awards, with the ultimate award determined by the total shareholder return of the Company's common stock and/or operating performance metrics, measured in each case over a measurement period of up to three years. Performance units for awards granted in 2017 or earlier that were earned at the end of the measurement period were settled in the form of time-vesting restricted stock. Performance units for awards granted in 2018 and later years that are earned at the end of the measurement period are settled in fully vested shares of common stock and an amount of cash equal to the dividends that were paid, while the performance award was outstanding, on a number of shares equal to the number of units earned.

After the first year of the performance period, if the employee's employment terminates on account of death, disability, retirement, or termination without cause, the employee shall vest in a pro rata portion of the award (based on the employee's service time during the performance period), with such vested portion to be earned and converted into shares and the cash amount for the dividends described above at the end of the performance period based on actual achievement under the performance award. For other terminating events, performance awards are generally forfeited.

Information with respect to performance awards granted is as follows:


	Performance awards	Weighted average grant date fair value per award
Outstanding at December 31, 2017	251,770	$	155.25
Granted (1)	100,965	155.31
Change in awards based on performance (2)	5,990	148.79
Converted to restricted stock	(88,477)	148.79
Forfeited	(3,119)	160.33
Outstanding at December 31, 2018	267,129	$	157.21
Granted (3)	80,512	200.75
Change in awards based on performance (2)	(16,760)	142.03
Converted to restricted stock	(73,072)	142.03
Forfeited	(4,377)	166.44
Outstanding at December 31, 2019	253,432	$	176.27
Granted (4)	77,182	238.03
Change in awards based on performance (2)	18,112	177.26
Converted to restricted stock	(96,317)	177.26
Forfeited	(10,488)	188.52
Outstanding at December 31, 2020	241,921	$	195.13

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(1) The amount of restricted stock that ultimately may be earned is based on the total shareholder return metrics related to the Company’s common stock for 62,043 performance awards and financial metrics related to operating performance, net asset value and leverage metrics of the Company for 38,922 performance awards.

(2) Represents the change in the number of performance awards earned based on performance achievement for the performance period.

(3) The amount of restricted stock that ultimately may be earned is based on the total shareholder return metrics related to the Company’s common stock for 47,502 performance awards and financial metrics related to operating performance and leverage metrics of the Company for 33,010 performance awards.

(4) The amount of restricted stock that ultimately may be earned is based on the total shareholder return metrics related to the Company’s common stock for 38,823 performance awards and financial metrics related to operating performance and leverage metrics of the Company for 38,359 performance awards.

The Company used a Monte Carlo model to assess the compensation cost associated with the portion of the performance awards granted for which achievement will be determined by using total shareholder return measures. The assumptions used are as follows:


	2020	2019	2018
Dividend yield	2.8%	3.1%	3.7%
Estimated volatility over the life of the plan (1)	11.1% - 15.5%	13.9% - 18.8%	11.8% - 18.7%
Risk free rate	1.45% - 1.62%	2.46% - 2.57%	1.86% - 2.46%
Estimated performance award value based on total shareholder return measure	$254.72	$204.15	$151.67

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(1) Estimated volatility of the life of the plan is using 50% historical volatility and 50% implied volatility.

For the portion of the performance awards granted for which achievement is determined by using financial metrics, the compensation cost was based on a weighted average grant date value of $224.64, $195.86 and $161.10, for the years ended December 31, 2020, 2019 and 2018, respectively, and the Company's estimate of corporate achievement for the financial metrics.

Information with respect to restricted stock granted is as follows:


	Restricted stock shares	Restricted stock shares weighted average grant date fair value per share		Restricted stock shares converted from performance awards
Outstanding at December 31, 2017	133,633	$	172.33	233,928
Granted - restricted stock shares	98,713	161.58		88,297
Vested - restricted stock shares	(67,832)	171.22		(112,230)
Forfeited	(4,103)	166.40		(757)
Outstanding at December 31, 2018	160,411	$	166.33	209,238
Granted - restricted stock shares	79,430	196.43		73,072
Vested - restricted stock shares	(89,289)	168.06		(119,064)
Forfeited	(2,226)	174.45		(135)
Outstanding at December 31, 2019	148,326	$	181.29	163,111
Granted - restricted stock shares	69,228	221.08		96,317
Vested - restricted stock shares	(79,931)	178.41		(111,325)
Forfeited	(5,899)	196.22		(1,784)
Outstanding at December 31, 2020	131,724	$	203.28	146,319

Total employee stock-based compensation cost recognized in income was $21,110,000, $24,885,000 and $19,707,000 for the years ended December 31, 2020, 2019 and 2018, respectively, and total capitalized stock-based compensation cost was $9,974,000, $9,396,000 and $10,208,000 for the years ended December 31, 2020, 2019 and 2018, respectively. At December 31, 2020, there was a total unrecognized compensation cost of $25,200,000 for unvested restricted stock and performance awards, which does not include forfeitures, and is expected to be recognized over a weighted average period of 1.8 years. Forfeitures are included in compensation cost as they occur.

Employee Stock Purchase Plan

In October 1996, the Company adopted the 1996 Non-Qualified Employee Stock Purchase Plan (as amended, the “ESPP”). Initially 1,000,000 shares of common stock were reserved for issuance under this plan. There are currently 634,274 shares remaining available for issuance under the ESPP. Employees of the Company generally are eligible to participate in the ESPP if, as of the last day of the applicable purchase period, they have been employed by the Company for at least one month. Under the ESPP, eligible employees are permitted to acquire shares of the Company's common stock through payroll deductions, subject to maximum purchase limitations, during two purchase periods. The first purchase period begins January 1 and ends June 10, and the second purchase period begins July 1 and ends December 10. The purchase price for common stock purchased under the plan is 85% of the lesser of the fair market value of the Company's common stock on the first day of the applicable purchase period or the last day of the applicable purchase period. The offering dates, purchase dates and duration of purchase periods may be changed if the change is announced prior to the beginning of the affected date or purchase period. The Company issued 20,161, 13,894 and 12,955 shares and recognized compensation expense of $537,000, $761,000 and $436,000 under the ESPP for the years ended December 31, 2020, 2019 and 2018, respectively. The Company accounts for transactions under the ESPP using the fair value method prescribed by accounting guidance applicable to entities that use employee share purchase plans.