Segment Information - Segment Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 770,657	$ 619,793	$ 584,954
Depreciation and amortization	71,128	52,406	50,721
Goodwill impairment	182,542	0	0
Income from operations	(178,888)	33,114	34,779
Interest expense	(61,243)	(52,085)	(62,870)
Other	(20,903)	(39,902)	(2,775)
Loss from continuing operations before benefit for income taxes and share of net income from joint venture	(261,034)	(58,873)	(30,866)
Share of net income (loss) from joint venture	(14,390)	5,211	5,938
Expenditures for long-lived assets	64,036	36,406	31,894
Total assets	1,501,570	1,475,003
Corporate And Eliminations
Segment Reporting Information [Line Items]
Net sales	(2,331)	(1,990)	(1,571)
Depreciation and amortization	2,067	1,170	427
Goodwill impairment	0
Income from operations	(48,806)	(38,002)	(28,611)
Share of net income (loss) from joint venture	0	0	0
Expenditures for long-lived assets	6,272	6,907	3,465
Total assets	44,466	307,916
Mobile Solutions
Segment Reporting Information [Line Items]
Goodwill impairment	73,442
Mobile Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	335,037	336,852	326,138
Depreciation and amortization	26,217	24,491	22,189
Goodwill impairment	73,442
Income from operations	(54,103)	34,405	29,490
Share of net income (loss) from joint venture	(14,390)	5,211	5,938
Expenditures for long-lived assets	36,660	24,056	23,077
Total assets	356,387	428,321
Power Solutions
Segment Reporting Information [Line Items]
Goodwill impairment	109,100
Power Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales	189,778	186,602	180,330
Depreciation and amortization	14,753	14,657	15,604
Goodwill impairment	109,100
Income from operations	(95,115)	23,440	24,060
Share of net income (loss) from joint venture	0	0	0
Expenditures for long-lived assets	6,459	5,443	3,125
Total assets	297,947	385,558
Life Sciences
Segment Reporting Information [Line Items]
Goodwill impairment	0
Life Sciences | Operating Segments
Segment Reporting Information [Line Items]
Net sales	248,173	98,329	80,057
Depreciation and amortization	28,091	12,088	12,501
Goodwill impairment	0
Income from operations	19,136	13,271	9,840
Share of net income (loss) from joint venture	0	0	0
Expenditures for long-lived assets	14,645	0	$ 2,227
Total assets	$ 802,770	353,208
Wuxi Weifu Autocam Precision Machinery Company, Ltd.
Segment Reporting Information [Line Items]
Investment in joint venture	49.00%
Wuxi Weifu Autocam Precision Machinery Company, Ltd. | Mobile Solutions | Operating Segments
Segment Reporting Information [Line Items]
Total assets	$ 20,400	$ 39,800