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Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Summary of the Company's RSU and PRSU awards

​

​	​	​	​	​	​	​	​	​	​	​
​		RSU Awards					PRSU Awards
​	​	​		Weighted-Average		​	​		Weighted-Average
​	​	​		Grant-Date		​	​		Grant-Date
​		Shares		Fair Value			Shares		Fair Value
​	​	​	​	​	​	​	​	​	​	​
Non-vested at December 31, 2020		336,898	​	$	23.48		66,580	​	$	21.26
Granted		238,985	​		18.44		62,790	​		18.46
Vested		(240,176)	​		21.22		(35,070)	​		18.81
Forfeited		(4,662)	​		20.61		—	​		—
Non-vested at June 30, 2021		331,045	​	$	21.51		94,300	​	$	20.31
Vested but unissued at June 30, 2021		214,829	​	$	21.03		102,185	​	$	20.48

Phantom Share Units (PSUs) [Member]

Notes Tables

Summary of the Phantom Stock Plan

​

​	​	​	​	​	​
Phantom Stock Plan		Shares		Fair Value
Outstanding at December 31, 2020		120,248	​	$	16.64
Granted		9,042	​		19.52
Forfeited	​	(11)	​	​	18.25
Distributions		(1,483)	​		17.15
Outstanding at June 30, 2021		127,796	​	$	21.43
Vested at June 30, 2021		127,685	​	$	21.43

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