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Segment Information - Segment Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | $ 214,272 | $ 164,856 | $ 426,498 | $ 328,601 |
Income (loss) from operations | 16,703 | 13,589 | 28,577 | 27,524 |
Total assets | 1,389,741 | 708,940 | 1,389,741 | 708,940 | $ 1,380,567
Corporate and Consolidations [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Income (loss) from operations | (8,323) | (5,410) | (14,723) | (8,494) |
Total assets | 5,656 | 31,226 | 5,656 | 31,226 |
Precision Bearing Components Group [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 65,157 | 69,261 | 129,902 | 142,496 |
Income (loss) from operations | 6,474 | 9,403 | 12,800 | 18,491 |
Total assets | 226,943 | 209,986 | 226,943 | 209,986 |
Autocam Precision Components Group [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 82,991 | 86,471 | 166,981 | 169,093 |
Income (loss) from operations | 7,770 | 9,095 | 14,297 | 16,813 |
Total assets | 423,703 | 439,526 | 423,703 | 439,526 |
PEP [Member] | Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues from external customers | 66,124 | 9,124 | 129,615 | 17,012 |
Income (loss) from operations | 10,782 | 501 | 16,203 | 714 |
Total assets | $ 733,439 | $ 28,202 | $ 733,439 | $ 28,202 |

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