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Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2020

Stock Based Compensation Plan [Abstract]

Share Option and Award Activity

The following table summarizes our equity award activity during the years ended December 31, 2020, 2019, and 2018:

		Service-Based Restricted Stock Awards								Performance-Based Restricted Stock Awards								Stock-Settled Appreciation Rights
		Shares or Units (#)				Weighted-Average Award Price($)				Shares or Units(#)				Weighted-Average Award Price ($)				Rights(#)				Weighted-Average Award Price($)
Outstanding at December 31, 2017			254,490				21.88				179,774				21.42				57,000				18.14
Granted			141,722				22.73				103,940				22.95				—				—
Awards vested or rights exercised			(132,872	)			22.45				(48,661	)			24.10				—				—
Forfeited			(14,198	)			21.94				(25,299	)			21.40				—				—
Outstanding at December 31, 2018			249,142				22.05				209,754				21.56				57,000				18.14
Granted			137,768				20.24				113,522				20.29				—				—
Awards vested or rights exercised			(133,364	)			22.27				(57,351	)			18.93				(49,500	)			18.14
Forfeited			(18,736	)			21.25				(51,116	)			22.45				—				—
Outstanding at December 31, 2019			234,810				20.93				214,809				21.38				7,500				18.14
Granted			145,375				20.42				120,727				20.42				—				—
Awards vested or rights exercised			(130,434	)			20.69				(44,875	)			22.12				(7,500	)			18.14
Forfeited			(10,470	)			20.41				(76,766	)			20.29				—				—
Outstanding at December 31, 2020			239,281				20.77				213,895				21.08				—				—
Restricted units expected to vest			239,281				20.77				289,510				20.90				—				—
Exercisable at December 31, 2019			—				—				—				—				7,500				18.14
Exercisable at December 31, 2018			—				—				—				—				57,000				18.14

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- References

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- Definition

Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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