Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Summary of the Weighted-Average Assumption Used in Estimating Fair Value of Stock Appreciation Rights

The following table summarizes the weighted-average assumptions used in estimating the fair value of the SARs granted during the first three months of 2021:

Grant Date	Expected Dividend Yield	Expected Volatility	Risk Free Interest Rate	Expected Term	Weighted Avg. Grant Date Fair Value of 1 SAR
February 2021	2.4%	26.5%	0.6%	5.5 years	$29.43

Summary of the Attributes of the Performance Shares Granted During the Period

The following table summarizes the related assumptions used to determine the fair values of the performance share awards with a market condition granted during February 2021:

Grant Date	Stock Price on Measurement Date	Dividend Yield	Expected Volatility	Risk Free Interest Rate	Expected Term	Weighted Avg. Grant Date Fair Value
February 2021	$163.26	2.4%	40.6%	0.2%	3 years	$198.89

The Company expenses these awards on a straight-line basis over the requisite service period and including an assessment of the performance achieved to date. The weighted average fair value per share was $151.92 for the awards granted in the first quarter of 2021.

Grant Date	Fair Value	Performance Period	Payout Range
February 2021	$151.92	Jan 2021 - Dec 2023	0-200%