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Repurposing Charges - Schedule of Plan Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Restructuring and Related Activities [Abstract]      
Employee termination benefits   $ 889,000  
Impairment costs associated with plan   4,439,000  
Repurposing charges $ 0 $ 5,328,000 $ 0