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Long-Term Compensation Plan and Stock Based Compensation - Allocation of Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Compensation expense
Stock-based compensation	$ 1,342	$ 1,350
Other long-term compensation plan	200	365
Total Compensation	$ 1,542	$ 1,715

X

- Definition

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

+ References

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-Publisher FASB
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X

- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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- Definition

Amount of noncash expense for share-based payment arrangement.

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