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OTHER CURRENT LIABILITIES (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jan. 01, 2019
Dec. 31, 2018
Other current liabilities      
Unfunded cash account balances $ 2,632   $ 4,932
Operating lease liabilities 11,964 $ 16,700 0
Other 2,125   2,098
Total $ 16,721   $ 7,030