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Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Valuation Assumptions

The weighted-average estimated value of SPRs outstanding as of December 31, 2021 was $26.66 per SPR using the following assumptions:

Expected volatility			30.3% to 53.7%
Risk-free rate of return			0.2% to 0.9%
Expected term (in years)			0.1 to 2.5
Expected annual dividend			$0

Activity Related to SPRs

Activity related to the Company’s SPRs during the year ended December 31, 2021 was as follows:

			Number of SPRs						Weighted Average Exercise Price
Outstanding on December 31, 2020			581,000						$	26.88
Exercised			(4,464)						55.46
Outstanding on December 31, 2021			576,536						26.66
Exercisable on December 31, 2021			576,536						$	26.66

Activity Related to RSAs

Activity related to the Company’s RSAs during the year ended December 31, 2021 was as follows:

			Restricted Stock Awards
Outstanding on December 31, 2020			45,799
Granted			59,091
Exchanged for common shares			(32,661)
Outstanding on December 31, 2021			72,229

MSU Rollforward

Activity related to the Company’s MSUs during the year ended December 31, 2021 was as follows:

			Number of Market Stock Units						Maximum Shares Potentially Issuable
Outstanding on December 31, 2020			137,256						195,723
Granted			19,688						29,568
Exchanged for stock			(28,804)						(42,811)
Outstanding on December 31, 2021			128,140						182,480

Share-based Payment Arrangement, Performance Shares, Activity

Activity related to the Company’s PAs during the year ended December 31, 2021 was as follows:

			Number of Performance Awards						Maximum Shares Potentially Issuable
Outstanding on December 31, 2020			10,852						16,278
Granted			15,723						23,585
Outstanding on December 31, 2021			26,575						39,863

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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