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Share based compensation - Additional Information (Detail) | 3 Months Ended
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Mar. 31, 2013 | Mar. 31, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |  |
Common stock issued under Employee Stock Purchase Plan (in shares) | 113,965 | 262,713

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- Definition Cumulative number of shares issued as of the balance sheet date as a result of an employee stock purchase plan. + References No definition available. + Details
Name: | ofix_CumulativeStockIssuedSharesEmployeeStockPurchasePlans
Namespace Prefix: | ofix_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration