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Goodwill By Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Jan. 15, 2013	Dec. 31, 2012
Goodwill [Line Items]
Goodwill	$ 202,810		$ 176,232
Accumulated impairment of goodwill	(131,654)		(131,654)
Total	71,156	26,578	44,578
Laser Products
Goodwill [Line Items]
Goodwill	132,954		132,954
Accumulated impairment of goodwill	(102,461)		(102,461)
Total	30,493		30,493
Medical Technologies
Goodwill [Line Items]
Goodwill	43,565		16,987
Accumulated impairment of goodwill	(12,147)		(12,147)
Total	31,418		4,840
Precision Technologies
Goodwill [Line Items]
Goodwill	26,291		26,291
Accumulated impairment of goodwill	(17,046)		(17,046)
Total	$ 9,245		$ 9,245

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a,h)

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