Inventories - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Inventories
Raw materials	$ 27,660	$ 25,365
Work-in-process	2,570	2,034
Finished goods	1,354	4,135
Total	$ 31,584	$ 31,534

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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
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