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Consolidated Statements of Changes in Shareholders' Equity (USD $)
In Thousands, except Share data
Total
Common Shares [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Balance, Amount at Dec. 31, 2010 $ 293,918us-gaap_CommonStockValueOutstanding $ 1,772us-gaap_CommonStockValueOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 195,597us-gaap_CommonStockValueOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ 90,119us-gaap_CommonStockValueOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 6,430us-gaap_CommonStockValueOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance, Shares at Dec. 31, 2010   17,726,645us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Cumulative effect of adjustments on opening balance (12,564)us-gaap_CumulativeEffectOfProspectiveApplicationOfNewAccountingPrinciple     (12,564)us-gaap_CumulativeEffectOfProspectiveApplicationOfNewAccountingPrinciple
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Balance, Amount (Restated) 281,354us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1 1,772us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
195,597us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
77,555us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
6,430us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance, Shares (Restated)   17,726,645ofix_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalanceShares
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Net income (loss) (17,698)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic     (17,698)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Unrealized gain (loss) on derivative instrument (437)us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent       (437)us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Translation adjustment (1,897)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent       (1,897)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Purchase of minority interest (517)us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance   (517)us-gaap_NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Tax benefit on exercise of stock options 1,737us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation   1,737us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Reclassification for tax benefit on exercise of stock options (8,999)ofix_AdjustmentsToAdditionalPaidInCapitalReclassificationExerciseOfStockOption   (8,999)ofix_AdjustmentsToAdditionalPaidInCapitalReclassificationExerciseOfStockOption
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Share-based compensation expense 6,648us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   6,648us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Common shares issued 20,113us-gaap_StockIssuedDuringPeriodValueNewIssues 74us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
20,039us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Common shares issued, Shares   738,799us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Balance, Amount at Dec. 31, 2011 280,304us-gaap_StockholdersEquity 1,846us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
214,505us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
59,857us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
4,096us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance, Shares at Dec. 31, 2011   18,465,444us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Net income (loss) 42,852us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic     42,852us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Unrealized gain (loss) on derivative instrument 263us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent       263us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Translation adjustment 1,131us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent       1,131us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Share-based compensation expense 6,303us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   6,303us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Common shares issued 25,586us-gaap_StockIssuedDuringPeriodValueNewIssues 88us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
25,498us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Common shares issued, Shares   873,885us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Balance, Amount at Dec. 31, 2012 356,439us-gaap_StockholdersEquity 1,934us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
246,306us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
102,709us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
5,490us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance, Shares at Dec. 31, 2012 19,339,329us-gaap_CommonStockSharesOutstanding 19,339,329us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Net income (loss) (28,812)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic     (28,812)us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
 
Unrealized gain (loss) on derivative instrument (279)us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent       (279)us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Translation adjustment (1,708)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent       (1,708)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Share-based compensation expense 6,267us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   6,267us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Common shares issued 3,450us-gaap_StockIssuedDuringPeriodValueNewIssues 20us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
3,430us-gaap_StockIssuedDuringPeriodValueNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Common shares issued, Shares   200,584us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Retirement of repurchased common stock (39,494)ofix_RepurchaseAndRetirementOfCommonStock (144)ofix_RepurchaseAndRetirementOfCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(39,350)ofix_RepurchaseAndRetirementOfCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Retirement of repurchased common stock, Shares   (1,437,578)ofix_RetirementOfRepurchasedCommonStock
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Balance, Amount at Dec. 31, 2013 $ 295,863us-gaap_StockholdersEquity $ 1,810us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 216,653us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ 73,897us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 3,503us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
Balance, Shares at Dec. 31, 2013 18,102,335us-gaap_CommonStockSharesOutstanding 18,102,335us-gaap_CommonStockSharesOutstanding
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember