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Earnings Per Share (Details) - shares
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Weighted average unvested shares outstanding 300,000 200,000
Forward Sales Contracts    
Forward Contract Indexed to Issuer's Equity, Indexed Shares 331,318  
Stock Options    
Anti-dilutive stock options 2,363 682
Performance Based Unvested Shares    
Anti-dilutive stock options 10,441