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COMMITMENTS AND CONTINGENCIES - Narrative (Details) |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jul. 29, 2019 USD ($) | Sep. 30, 2021 USD ($) liability | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2019 USD ($)
Arkis |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Purchase price of business combination | $ 30,600,000 |  |  |  |
Contingent consideration, estimated fair value | 25,500,000 |  |  |  |
Contingent consideration | 13,100,000 | $ 14,600,000 |  | $ 14,200,000 |
Arkis | Other Long-term Liabilities | Fair Value, Inputs, Level 3 | Contingent Consideration Liability |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Additions from acquisition of ACell |  | 14,617,000 | $ 11,746,000 | 14,165,000 | $ 14,210,000
Arkis | Development Milestones |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Contingent consideration, estimated fair value | 10,000,000.0 |  |  |  |
Arkis | Commercial Sales Milestones |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Contingent consideration, estimated fair value | $ 15,500,000 |  |  |  |
Derma Sciences |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Contingent consideration, estimated fair value |  | $ 200,000 |  | 200,000 |
Number of contingent liabilities remaining | liability |  | 1 |  |  |
Contingent consideration, maximum undiscounted payment amount |  | $ 3,000,000 |  |  |
Derma Sciences | Other Long-term Liabilities | Fair Value, Inputs, Level 3 | Contingent Consideration Liability |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Additions from acquisition of ACell |  | 230,000 | $ 230,000 | $ 230,000 | $ 230,000
Derma Sciences | BioD Earnout Payments and Medihoney Earnout Payments |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Payment for contingent consideration |  | $ 33,300,000 |  |  |

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