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Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Restricted Stock Award Activity for Employees and Non-Employee Directors

The following table summarizes our restricted stock award activity for employees and non-employee directors:

		Shares				Weighted Average Grant Date Fair Value Per Share
Unvested at January 1, 2019			91,181			$	107.06
Granted			75,048				144.89
Vested			(51,675	)			98.11
Forfeited			(5,400	)			133.91
Unvested at December 31, 2019			109,154			$	135.97

Summary of the Changes in the Number of Outstanding Phantom Stock Shares

A summary of the changes in the number of outstanding phantom stock awards during the year ended December 31, 2019 for the Phantom Plans is provided below:

		Employee Phantom Plans				Director Phantom Stock Plan				Total
Balance of shares outstanding at December 31, 2018			466,387				54,071				520,458
Granted			—				—				—
Settled			(41,217	)			—				(41,217	)
Forfeited			—				—				—
Balance of shares outstanding at December 31, 2019			425,170				54,071				479,241

Schedule of cash payments and compensation costs

A summary of cash payments for settled unmodified liability phantom shares is provided below:

		Year Ended December 31,
(In thousands)		2019				2018				2017
Employee Phantom Plans		$	2,988			$	2,360			$	3,066
Director Phantom Stock Plan			964				198				474

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Tabular disclosure of the amount of cash payments and compensation costs related to the exercise of stock options and similar instruments granted under share-based payment arrangements during the period.

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Tabular disclosure of share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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

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