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Rental Activity (Tables)
 12 Months Ended
Dec. 31, 2018
Leases [Abstract]  
Schedule of Future Minimum Rent Payments Receivable Future minimum rent payments for arrangements not on a month-to-month basis at December 31, 2018 are as follows:
Years Ending December 31, 
(in thousands) 
2019$ 7,245 
2020$ 3,334 
2021$ 2,763 
2022$ 2,644 
2023$ 1,058 
Total $ 17,044