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Business segment information - Operating Income (Loss) by GBU (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Product Type Reporting Information [Line Items] |  |  |
Operating income (loss) | $ 89,010 | $ 31,309 | $ 66,250
Spine [Member] |  |  |
Product Type Reporting Information [Line Items] |  |  |
Operating income (loss) | 90,771 | 46,618 | 80,688
Orthopedics [Member] |  |  |
Product Type Reporting Information [Line Items] |  |  |
Operating income (loss) | 15,280 | 12,368 | 5,878
Corporate [Member] |  |  |
Product Type Reporting Information [Line Items] |  |  |
Operating income (loss) | $ (17,041) | $ (27,677) | $ (20,316)

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- Details
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Namespace Prefix: | ofix_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration