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Related-Party Transactions (Details) - USD ($)
1 Months Ended 6 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Oct. 31, 2018
Jun. 30, 2021
Dec. 31, 2020
Related-Party Transactions (Details) [Line Items]          
Principal amount   $ 1,000,000 $ 1,000,000    
Aggregate principal amount   $ 1,000,000 $ 1,000,000    
Christopher Chipman [Member]          
Related-Party Transactions (Details) [Line Items]          
Aggregate principal amount       $ 25,000  
Chief Executive Officer [Member]          
Related-Party Transactions (Details) [Line Items]          
Deferred compensation       1,052,000 $ 1,005,000
Anthony Mack [Member]          
Related-Party Transactions (Details) [Line Items]          
Aggregate principal amount $ 75,000     $ 75,000  
Chief Financial Officer [Member]          
Related-Party Transactions (Details) [Line Items]          
Aggregate principal amount $ 25,000