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ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Payables and Accruals [Abstract] |  |
Salaries and employee benefits | $ 15,927 | $ 10,289
Sales, use and property tax (See Note 14) | 3,594 | 3,367
Convention and meeting costs | 6,540 | 4,970
Other | 8,740 | 6,354
Total | $ 34,801 | $ 24,980

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