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Fair Value Measurements (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Liabilities:              
Goodwill, Impairment Loss         $ 4,879 $ 81,707  
Goodwill and other asset impairment $ 161 $ 6,655 $ 0 $ 63,879 8,599 87,204 $ 5,471
Impairment of right-of-use asset $ 161       3,700    
Derivative, Discount Rate 9.91%            
6.50% Notes due 2024 | Fair Value, Inputs, Level 1 | Senior Notes              
Liabilities:              
Long term debt, Carrying Amount $ 900,000 900,000   900,000 900,000 900,000  
Long term debt, Fair Value $ 675,000 $ 812,250   $ 834,750 $ 812,250 $ 834,750