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ALLOWANCE FOR DOUBTFUL ACCOUNTS AND BAD DEBT EXPENSE	12 Months Ended
	Dec. 31, 2018
ALLOWANCE FOR DOUBTFUL ACCOUNTS AND BAD DEBT EXPENSE
ALLOWANCE FOR DOUBTFUL ACCOUNTS AND BAD DEBT EXPENSE	NOTE 6—ALLOWANCE FOR DOUBTFUL ACCOUNTS AND BAD DEBT EXPENSE At December 31, 2018 and 2017, there was no balance in the allowance for doubtful accounts.   The Company records bad debt expense as a reduction of rental income and/or tenant reimbursements.  The Company recorded bad debt expense of $684,000,  $291,000, and $105,000 during 2018, 2017 and 2016, respectively.  Such bad debt expense related to rental income and tenant reimbursements due from five tenants that filed for Chapter 11 bankruptcy protection during such years. In 2017, the Company sold three of these properties, located in Greenwood Village, Colorado, Niles, Illinois and Ann Arbor, Michigan (see Note 5). The Company determined that no impairment charge is required with respect to the two remaining properties, which at December 31, 2018, had an aggregate net book value of $18,143,000.

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- Definition

The entire disclosure for allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-URI http://asc.fasb.org/topic&trid=2196771

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