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Receivables (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Receivables [Abstract]    
Rents and other receivables, net $ 7,242,000 $ 6,541,000
Mortgage note receivable 3,500,000 3,500,000
Straight-line rents, net 11,126,000 11,911,000
Receivables $ 21,868,000 $ 21,952,000