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Sale of Breg and Disposition of Sports Medicine SBU - Schedule of Information Related to Sale of Breg (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Less:  
Gain on sale of Breg, net of taxes $ 1,345
Breg [Member]
 
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Cash proceeds 157,500
Less:  
Working Capital (7,093)
Transaction related expenses (4,276)
Fair value of indemnification (2,000)
Tangible assets (8,309)
Intangible assets (28,164)
Goodwill (106,200)
Gain on sale of Breg 1,458
Income tax expense (113)
Gain on sale of Breg, net of taxes $ 1,345