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Segment Information - Continuing Operations by Reportable Segment (Detail) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) segment | Mar. 31, 2020 USD ($)
Segment Reporting [Abstract] |  |
Number of reportable segments | segment | 2 |
Number of operating segments | segment | 2 |
Segment Reporting Information [Line Items] |  |
Net sales | $ 126,804 | $ 116,213
Goodwill impairment | 0 | 92,942
Income (loss) from operations | 978 | (103,850)
Interest expense | (2,024) | (3,807)
Other | (6,018) | (1,544)
Loss from continuing operations before benefit for income taxes and share of net income (loss) from joint venture | (7,064) | (109,201)
Operating Segments | Mobile Solutions |  |
Segment Reporting Information [Line Items] |  |
Net sales | 77,776 | 69,884
Goodwill impairment |  | 0
Income (loss) from operations | 6,090 | 264
Operating Segments | Power Solutions |  |
Segment Reporting Information [Line Items] |  |
Net sales | 49,075 | 46,401
Goodwill impairment |  | 92,942
Income (loss) from operations | 2,432 | (90,334)
Corporate and Eliminations |  |
Segment Reporting Information [Line Items] |  |
Net sales | (47) | (72)
Goodwill impairment |  | 0
Income (loss) from operations | $ (7,544) | $ (13,780)

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