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Stockholders' Deficit (Tables)
6 Months Ended
Jun. 30, 2021
Equity [Abstract]  
Dividends Declared Dividends declared and paid per share for the three and six months ended June 30, 2021 and 2020 were as follows:
Three months ended June 30,Six months ended June 30,
 2021202020212020
Dividends declared per common share$— $— $— $0.76 
Dividends paid per common share$— $0.76 $— $1.45