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Major Customers (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) customer | Jun. 30, 2023 USD ($)
Revenue, Major Customer [Line Items] |  |  |  |
Number of major customers | customer |  |  | 6 |
Net sales | $ 88,743 | $ 97,725 | $ 166,888 | $ 197,232
Product |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 83,956 | 95,703 | 159,787 | 194,040
Tooling |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 4,787 | 2,022 | 7,101 | 3,192
UFP |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 4,962 | 9,157 | 11,237 | 19,932
UFP | Product |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 4,962 | 9,157 | 11,237 | 19,932
UFP | Tooling |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 0 | 0 | 0 | 0
Navistar |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 18,269 | 17,751 | 32,858 | 37,197
Navistar | Product |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 18,209 | 17,751 | 32,638 | 37,012
Navistar | Tooling |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 60 | 0 | 220 | 185
Volvo |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 13,505 | 16,117 | 26,225 | 31,770
Volvo | Product |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 13,505 | 15,362 | 26,225 | 30,971
Volvo | Tooling |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 0 | 755 | 0 | 799
Yamaha |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 8,752 | 8,468 | 17,334 | 16,356
Yamaha | Product |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 8,752 | 8,468 | 17,334 | 16,356
Yamaha | Tooling |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 0 | 0 | 0 | 0
PACCAR |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 10,730 | 9,383 | 20,925 | 19,652
PACCAR | Product |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 10,610 | 8,721 | 20,559 | 18,922
PACCAR | Tooling |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 120 | 662 | 366 | 730
BRP |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 9,383 | 12,614 | 17,054 | 25,339
BRP | Product |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 9,268 | 12,457 | 16,825 | 24,601
BRP | Tooling |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 115 | 157 | 229 | 738
Other Customers |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 23,142 | 24,235 | 41,255 | 46,986
Other Customers | Product |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | 18,650 | 23,787 | 34,969 | 46,246
Other Customers | Tooling |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Net sales | $ 4,492 | $ 448 | $ 6,286 | $ 740

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