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Other income (Tables)
12 Months Ended
Dec. 31, 2021
Component of Operating Income [Abstract]  
Schedule of other income
Other income consisted of the following for the years ended December 31, 2021, 2020 and 2019:
Year Ended December 31,
202120202019
Proceeds from unsecured claims$635,075 $— $— 
Management fees15,725 9,701 12,445 
Interest and other income71,774 73,304 53,794 
$722,574 $83,005 $66,239