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LEASES - Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Jan. 01, 2019
--- | --- | ---
Assets |  |
Operating lease right-of-use assets | $ 23,951 |
Liabilities [Abstract] |  |
Current portion of operating lease liabilities | 4,941 | $ 4,426
Long-term portion of operating lease liabilities | 20,213 | 19,566
Total operating lease liabilities | $ 25,154 |
Accounting Standards Update 2016-02 |  |
Assets |  |
Operating lease right-of-use assets |  | 23,143
Liabilities [Abstract] |  |
Total operating lease liabilities |  | $ 23,992

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