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Stock-Based Compensation - Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost
Total stock-based compensation expense	$ 3,027	$ 2,888	$ 9,862	$ 8,960
Equity awards
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost
Total stock-based compensation expense	2,900	2,645	8,741	8,423
Liability awards
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost
Total stock-based compensation expense	$ 127	$ 243	$ 1,121	$ 537

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

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-Name Accounting Standards Codification
-Topic 718
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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+ References

No definition available.

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