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Share based compensation - Additional Information (Detail)	3 Months Ended
	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

X

- 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

X

- Details

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