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Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Medicare recovery claims $ 9,284 $ 10,622
Prepaid expenses and other 12,984 17,505
Prepaid expenses and other current assets $ 22,268 $ 28,127