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Leases (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating right-of-use assets $ 32,198 $ 28,178
Property, plant and equipment, net 400 505
Total right-of use assets 32,598 28,683
Operating lease liabilities, current and long-term portions 33,319 28,577
Long-term debt, current and long-term portions 502 590
Total lease liabilities $ 33,821 $ 29,167