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Inventories (Schedule of Inventory Current) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Work in process	$ 39,622		$ 34,355
Parts inventory	5,013		4,476
Total inventories, net	$ 44,635	$ 47,539	$ 38,831

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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Gross amount of components of assembled products that can be sold directly or indirectly through sales of assembled products.

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