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Mortgages and Notes Receivable	12 Months Ended
Mortgages and Notes Receivable	Dec. 31, 2017
Receivables [Abstract]
Mortgages and Notes Receivable	Mortgages and Notes Receivable Mortgages and notes receivable were $6.4 million and $8.8 million at December 31, 2017 and 2016, respectively. We evaluate the ability to collect our mortgages and notes receivable by monitoring the leasing statistics and/or market fundamentals of these assets. As of December 31, 2017, our mortgages and notes receivable were not in default and there were no other indicators of impairment.