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Leases - Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Cash Flow, Operating Activities, Lessee [Abstract]        
Cash flow for operating activities $ (20,070) $ (12,885) $ (46,851) $ (40,816)
Right of use assets obtained in exchange for new operating lease liabilities $ 9,792 $ 4,194 $ 9,792 $ 15,714