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REVENUE (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |
Total net product sales | $ 80,717 | $ 70,139 | $ 155,004 | $ 138,564
EXPAREL |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total net product sales | 80,430 | 69,773 | 154,464 | 137,474
Other product sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total net product sales | $ 287 | $ 366 | $ 540 | $ 1,090
Minimum [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Accounts Receivable, Additional Narrative Disclosure |  |  | 0 |
Maximum [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Accounts Receivable, Additional Narrative Disclosure |  |  | 37 |

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