Acquisitions - Summary of Final Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Oct. 19, 2015	Dec. 31, 2014	Sep. 30, 2014	Aug. 29, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Property, plant, and equipment	$ 59,100		$ 168,500
Goodwill	$ 449,898		83,941			$ 8,624
Total assets acquired			21,000
Other Acquisitions [Member]
Business Acquisition [Line Items]
Current assets			5,565	$ 5,688
Property, plant, and equipment			15,336	15,367
Intangible assets subject to amortization			2,705	2,705
Goodwill			2,494	2,038
Total assets acquired			26,100	25,798
Current liabilities			5,105	4,803
Total liabilities assumed			5,105	4,803
Net asset acquired			20,995	20,995
Other Acquisitions [Member] | Adjustments to Fair Value [Member]
Business Acquisition [Line Items]
Current assets			(123)
Property, plant, and equipment			(31)
Goodwill			456
Total assets acquired			302
Current liabilities			302
Total liabilities assumed			302
Autocam [Member]
Business Acquisition [Line Items]
Current assets			87,347	88,529
Property, plant, and equipment			153,185	146,120
Intangible assets subject to amortization			51,660	51,098
Investment in joint venture			35,595	35,595
Other non-current assets			6,068	2,170
Goodwill			73,992	77,548
Total assets acquired			407,847	401,060
Current liabilities			41,283	34,320
Current maturities of long-term debt			6,547	6,547
Non-current deferred tax liabilities			46,512	46,998
Obligations under capital lease			18,350	18,350
Long-term debt, net of current portion			4,263	4,263
Other non-current liabilities			2,338	2,028
Total liabilities assumed			119,293	112,506
Net asset acquired			$ 288,554	$ 288,554
Autocam [Member] | Adjustments to Fair Value [Member]
Business Acquisition [Line Items]
Current assets					$ (1,182)
Property, plant, and equipment					7,065
Intangible assets subject to amortization					562
Other non-current assets					3,898
Goodwill					(3,556)
Total assets acquired					6,787
Current liabilities					6,963
Non-current deferred tax liabilities					(486)
Other non-current liabilities					310
Total liabilities assumed					$ 6,787
PEP [Member]
Business Acquisition [Line Items]
Current assets		$ 69,331
Property, plant, and equipment		56,163
Intangible assets subject to amortization		240,490
Other non-current assets		1,500
Goodwill		364,450
Total assets acquired		731,934
Current liabilities		21,131
Non-current deferred tax liabilities		87,578
Other non-current liabilities		2,029
Total liabilities assumed		110,738
Net asset acquired		$ 621,196