Segment Information - Segment Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net sales		$ 847,451,000	$ 770,657,000	$ 619,793,000
Depreciation and amortization		91,846,000	71,128,000	52,406,000
Goodwill impairment		0	182,542,000	0
Income (loss) from operations		9,889,000	(179,864,000)	31,780,000
Interest expense		(57,155,000)	(61,243,000)	(52,085,000)
Other		(4,433,000)	(20,903,000)	(39,902,000)
Loss before benefit for income taxes and share of net income from joint venture		(51,699,000)	(262,010,000)	(60,207,000)
Share of net income (loss) from joint venture		1,681,000	(14,390,000)	5,211,000
Expenditures for long-lived assets		54,003,000	64,036,000	36,406,000
Total assets	$ 1,500,902,000	1,541,984,000	1,500,902,000	1,473,709,000
Life Sciences
Segment Reporting Information [Line Items]
Net sales		359,732,000	248,173,000	98,329,000
Goodwill impairment		0	0
Life Sciences | Operating Segments
Segment Reporting Information [Line Items]
Net sales		359,732,000	248,173,000	98,329,000
Depreciation and amortization		46,905,000	28,091,000	12,088,000
Goodwill impairment			0
Income (loss) from operations		28,157,000	19,136,000	13,271,000
Share of net income (loss) from joint venture				0
Expenditures for long-lived assets		21,445,000	14,645,000	0
Total assets	802,770,000	811,526,000	802,770,000	353,208,000
Mobile Solutions
Segment Reporting Information [Line Items]
Net sales				336,852,000
Goodwill impairment			73,442,000
Mobile Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales		297,749,000	335,037,000	336,852,000
Depreciation and amortization		27,146,000	26,217,000	24,491,000
Goodwill impairment			73,442,000
Income (loss) from operations		9,553,000	(55,079,000)	33,071,000
Share of net income (loss) from joint venture		1,681,000	(14,390,000)	5,211,000
Expenditures for long-lived assets		24,969,000	36,660,000	24,056,000
Total assets	354,542,000	373,256,000	354,542,000	427,027,000
Power Solutions
Segment Reporting Information [Line Items]
Net sales				186,602,000
Goodwill impairment	109,100,000		109,100,000
Power Solutions | Operating Segments
Segment Reporting Information [Line Items]
Net sales		192,100,000	189,778,000	186,602,000
Depreciation and amortization		15,301,000	14,753,000	14,657,000
Goodwill impairment			109,100,000
Income (loss) from operations		13,881,000	(95,115,000)	23,440,000
Share of net income (loss) from joint venture		0	0	0
Expenditures for long-lived assets		4,457,000	6,459,000	5,443,000
Total assets	297,947,000	310,545,000	297,947,000	385,558,000
Corporate And Consolidations | Corporate And Eliminations
Segment Reporting Information [Line Items]
Net sales		(2,130,000)	(2,331,000)	(1,990,000)
Depreciation and amortization		2,494,000	2,067,000	1,170,000
Income (loss) from operations		(41,702,000)	(48,806,000)	(38,002,000)
Share of net income (loss) from joint venture		0	0	0
Expenditures for long-lived assets		3,132,000	6,272,000	6,907,000
Total assets	45,643,000	$ 46,657,000	45,643,000	$ 307,916,000
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	$ 20,400,000	$ 21,800,000	$ 20,400,000