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Orthotec Settlement - Additional Information (Details) - Orthotec LLC, litigation settlement $ in Thousands |  |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | --- | ---
Oct. 01, 2014 USD ($) | Aug. 13, 2014 USD ($) installment | Apr. 30, 2014 USD ($) | Mar. 31, 2014 USD ($) | Mar. 31, 2017 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |
Judgment assessed by court for (against) company |  | $ (49,000) |  |  |
Payments of settlement |  |  | $ 15,750 | $ 1,750 | $ 28,500
Number of quarterly installments | installment |  | 28 |  |  |
Litigation settlement interest, quarterly installments, amount |  | $ 1,100 |  |  |
Litigation settlement, final installment amount |  | 700 |  |  |
Loss contingency accrual |  |  |  |  | $ 29,300
Beginning fourth quarter of 2014 |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Settlement amount, remaining balance | $ 31,500 |  |  |  |
Litigation settlement interest, quarterly installments, amount |  | $ 1,100 |  |  |
Litigation settlement interest rate |  | 7.00% |  |  |
Litigation settlement payments, quarterly payment amount |  | $ 1,100 |  |  |
Final installment |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of quarterly installments | installment |  | 1 |  |  |

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