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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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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
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