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ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details) | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) tenant property | Dec. 31, 2016 USD ($) tenant | Dec. 31, 2015 USD ($) tenant
Allowance for Doubtful Accounts |  |  |
Balance in allowance for doubtful accounts | $ 0 | $ 0 |
Bad debt expense | $ 291,000 | $ 98,000 |
Number of tenants related to rental income and reimbursements due recorded as bad debt expense | tenant | 5 | 5 | 5
Write-off of unbilled rent receivable | $ 362,000 | $ 7,000 | $ 566,000
Number of properties sold | property | 3 |  |
Number of properties re-tenanted | property | 1 |  |
Impairment loss | $ 153,000 |  |
Net book value of property | 2,118,000 |  |
Properties that filed for Chapter 11 bankruptcy |  |  |
Allowance for Doubtful Accounts |  |  |
Write-off of unbilled rent receivable | 362,000 | 7,000 | 89,000
Write-off of unamortized intangible lease assets and liabilities | 67,000 | 0 | 124,000
Write off of tenant origination costs | 884,000 | $ 0 | $ 380,000
Impairment loss | $ 0 |  |

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- Definition It represents the total number of properties re-tenanted. + References No definition available. + Details
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- Definition Represents the amount of unamortized intangible lease assets liabilities written off during the period. + References No definition available. + Details
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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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