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Other Assets and Liabilities - Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Other Liabilities Disclosure [Abstract]    
Accrued compensation $ 1,697 $ 3,944
Accrued restructuring (see Note 19) 520 2,949
Customer allowances 1,030 6,470
Accrued outsourced contract costs 473 2,833
Other 2,781 3,614
Total $ 6,501 $ 19,810