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Employee Benefits - Summary of Equity-Based Awards for Employees (Details)	3 Months Ended
	Mar. 31, 2022 $ / shares shares
Common Stock Awards
Awards
Nonvested common stock awards, Beginning balance (in shares) | shares	199,353
Granted (in shares) | shares	39,204
Forfeited/Cancelled (in shares) | shares	(50)
Nonvested common stock awards, Ending balance (in shares) | shares	238,507
Weighted Average Grant Date Fair Value Per Share
Nonvested performance-based stock awards, Beginning balance (in USD per share) | $ / shares	$ 68.99
Granted (in USD per share) | $ / shares	102.98
Forfeited/Cancelled (in USD per share) | $ / shares	126.89
Nonvested performance-based stock awards, Ending balance (in USD per share) | $ / shares	$ 74.57
Performance-Based Stock Awards
Awards
Nonvested performance-based stock awards/units, Beginning balance (in shares) | shares	143,401
Granted (in shares) | shares	54,585
Forfeited/Cancelled (in shares) | shares	0
Nonvested performance-based stock awards/units, Ending balance (in shares) | shares	197,986
Weighted Average Grant Date Fair Value Per Share
Nonvested performance-based stock awards/units, Beginning balance (in USD per share) | $ / shares	$ 81.30
Granted (in USD per share) | $ / shares	102.98
Forfeited/Cancelled (in USD per share) | $ / shares	0
Nonvested performance-based stock awards/units, Ending balance (in USD per share) | $ / shares	$ 87.28
Performance-Based Restricted Stock Units
Awards
Nonvested performance-based stock awards/units, Beginning balance (in shares) | shares	8,252
Granted (in shares) | shares	0
Forfeited/Cancelled (in shares) | shares	(191)
Nonvested performance-based stock awards/units, Ending balance (in shares) | shares	8,061
Weighted Average Grant Date Fair Value Per Share
Nonvested performance-based stock awards/units, Beginning balance (in USD per share) | $ / shares	$ 126.89
Granted (in USD per share) | $ / shares	0
Forfeited/Cancelled (in USD per share) | $ / shares	126.89
Nonvested performance-based stock awards/units, Ending balance (in USD per share) | $ / shares	$ 126.89

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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