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Impairment Charges (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Asset Impairment Charges [Abstract]        
Impairment charge $ 520 $ 0 $ 520 $ 0