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Interest Expense, Net (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Other Income and Expenses [Abstract]        
Interest expense $ (4,821) $ (7,477) $ (9,731) $ (9,607)
Interest income 371 974 1,532 842
Total interest expense, net $ (4,450) $ (6,503) $ (8,199) $ (8,765)