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Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]          
Allowance for Doubtful Accounts Receivable $ 1,163   $ 1,163   $ 155
Bad debt expense (recovery) 371 $ 0 1,054 $ (144)  
Accounts receivable 8,188   8,188   $ 10,622
COVID19          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Bad debt expense (recovery) 385   971    
Accounts receivable $ 1,210   $ 1,210