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Related Party Transactions (Details) - Principal Stockholder [Member] - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Related Party Transaction [Line Items]      
Lease annual rent payments $ 1.00    
Related party expense 80,000 $ 72,000 $ 72,000
Leasehold improvements to land, total cost 7,000,000.0    
Leasehold improvements to land, total cost less accumulated depreciation $ 2,600,000