Additional Financial Statement Information (Other) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Foreign exchange loss	$ (110)	$ (2,246)	$ (1,638)
Interest income	252	246	622
Pension expense	(468)	(738)	(643)
Other	96	(244)	958
Other nonoperating income (expense)	$ (230)	$ (2,982)	$ (701)

Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.

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