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Quarterly Results of Operations (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Quarterly results of operations:                              
Net sales $ 62,498 $ 72,992 $ 88,743 $ 78,145 $ 73,778 $ 86,728 $ 97,725 $ 99,507 $ 86,443 $ 101,606 $ 98,735 $ 90,592 $ 302,378 $ 357,738 $ 377,376
Gross margin 9,885 12,345 17,725 13,305 10,937 15,278 20,562 17,743 11,547 13,303 13,045 14,507 53,260 64,520 52,402
Operating income 869 3,605 7,489 4,732 2,517 5,875 10,070 8,075 2,974 4,632 4,385 6,012 16,695 26,537 18,003
Net income $ (39) $ 3,160 $ 6,419 $ 3,759 $ 2,182 $ 4,354 $ 7,936 $ 5,852 $ 4,832 $ 1,319 $ 2,188 $ 3,864 $ 13,299 $ 20,324 $ 12,203
Net income per share of common stock:                              
Basic (in USD per share) $ 0.00 $ 0.36 $ 0.74 $ 0.43 $ 0.25 $ 0.50 $ 0.93 $ 0.69 $ 0.57 $ 0.16 $ 0.26 $ 0.46 $ 1.53 $ 2.37 $ 1.44
Diluted (in USD per share) $ 0.00 $ 0.36 $ 0.73 $ 0.43 $ 0.25 $ 0.49 $ 0.91 $ 0.69 $ 0.57 $ 0.16 $ 0.26 $ 0.46 $ 1.51 $ 2.31 $ 1.44
Product sales                              
Quarterly results of operations:                              
Net sales $ 60,047 $ 71,258 $ 83,956 $ 75,831 $ 72,439 $ 80,896 $ 95,703 $ 98,337 $ 83,143 $ 92,340 $ 93,317 $ 89,901 $ 291,092 $ 347,375 $ 358,701
Tooling sales                              
Quarterly results of operations:                              
Net sales $ 2,451 $ 1,734 $ 4,787 $ 2,314 $ 1,339 $ 5,832 $ 2,022 $ 1,170 $ 3,300 $ 9,266 $ 5,418 $ 691 $ 11,286 $ 10,363 $ 18,675