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ACCOUNTING POLICIES (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Long-term Debt $ 396,600   $ 396,600    
Debt Instrument, Fair Value Disclosure $ 300,300   $ 300,300    
Common Stock, Dividends, Per Share, Declared $ 0 $ 0.005 $ 0.005 $ 0.015  
Senior Secured Notes 6.50 Percent [Member] [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage 6.50%   6.50%    
Long-term Debt $ 400,000   $ 400,000   $ 400,000