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

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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).

+ References

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-Section 50
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- Definition

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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Stock-Based Compensation - Other Stock Awards (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Stock-Based Compensation
Total stock-based compensation expense (in dollars)	$ 7,173		$ 6,906	$ 14,310	$ 13,758
Other stock awards
Stock-Based Compensation
Granted (in shares)		9,386			19,648
Weighted average grant-date fair value (in dollars per share)		$ 52.29			$ 53.03
Total stock-based compensation expense (in dollars)			$ 504	$ 491	$ 1,042