Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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The number of grants made 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 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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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Stock-Based Compensation
Stock-based compensation expense	$ 4,700	$ 3,300	$ 9,500	$ 9,800
Vesting period	60 days		4 years
Unrecognized compensation costs related to unvested share-based compensation arrangements	$ 27,600		$ 27,600
Weighted-average period for recognition of unrecognized stock-based compensation expense			2 years 4 months 24 days
Compensation expense			$ 655
Restricted Stock Units
Stock-Based Compensation
Awarded (in shares)			112,963
Weighted average granted date fair value (in dollars per share)			$ 119.60
Vesting period			3 years
Phantom Share Units (PSUs)
Stock-Based Compensation
Vesting period			3 years
Employees \| Restricted Stock Units
Stock-Based Compensation
Vesting period			4 years