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Details of Selected Balance Sheet Accounts - Inventories (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Details of Selected Balance Sheet Accounts [Abstract] |  |
Finished goods and purchased products | $ 95,094 | $ 90,443
Work in process | 31,632 | 32,079
Raw materials | 108,058 | 97,817
Total inventories | 234,784 | 220,339
Allowance for excess or obsolete inventory | (38,506) | (37,681)
Inventories, net | $ 196,278 | $ 182,658

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