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Commitments and Contingencies Narrative (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2015 | Dec. 31, 2015 USD ($) claim | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 30, 2015 term | Dec. 22, 2015 term | Oct. 02, 2015 term | Aug. 18, 2015 claim | Jul. 10, 2015 claim | Jun. 29, 2015 claim
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Lessee expiration period (years) |  | 5 years |  |  |  |  |  |  |  |
Rent and operating leases expense | $ |  | $ 1,317 | $ 1,130 | $ 1,000 |  |  |  |  |  |
Period for plaintiff to proceed with case (days) | 120 days |  |  |  |  |  |  |  |  |
Product Concentration Risk | Sales Revenue, Net |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of revenue (percent) |  | 12.00% |  |  |  |  |  |  |  |
Letters of Credit |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Standby letters of credit | $ |  | $ 235 |  |  |  |  |  |  |  |
Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of pending claims |  | 3 |  |  |  |  |  |  |  |
Liventa Action [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of dispute claim terms at issue | term |  |  |  |  | 1 | 30 |  |  |  |
Liventa Action, 701 Patent [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of pending claims |  |  |  |  |  |  |  | 6 |  |
Liventa Action, 437 Patent [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of pending claims |  |  |  |  |  |  |  | 7 |  |
Opinion allowing a review of patent, number |  |  |  |  |  |  |  | 1 |  |
Bone Bank Action [Member] | Pending Litigation [Member] |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |
Number of pending claims |  |  |  |  |  |  |  |  | 5 | 7
Number of dispute claim terms at issue | term |  |  |  |  |  |  | 1 |  |  |
Opinion allowing a review of patent, number |  |  |  |  |  |  |  |  | 2 |

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