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SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) | 12 Months Ended
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Dec. 31, 2012 item | Dec. 31, 2011 | Dec. 31, 2010
Revenue Recognition |  |  |
Additional rental income for the reimbursement of expenses | $ 947,000 | $ 794,000 | $ 496,000
Purchase Accounting for Acquisition of Real Estate |  |  |
Estimated useful lives of building and intangible assets, minimum | 1 year |  |
Estimated useful lives of building and intangible assets, maximum | 35 years |  |
Escrow, Deposits and Other Assets and Receivables |  |  |
Restricted cash relating to real estate taxes, insurance and other escrows | 1,104,000 | 999,000 |
Allowance for Doubtful Accounts |  |  |
Balance in allowance for doubtful accounts | 132,000 | 335,000 |
Amount written off | 86,000 | 1,109,000 |
Number of tenants from whom the doubtful collections were received | 1 |  |
Continuing operations |  |  |
Allowance for Doubtful Accounts |  |  |
Bad debt expense | 56,000 | 486,000 | 432,000
Discontinued operations |  |  |
Allowance for Doubtful Accounts |  |  |
Bad debt expense |  | (19,000) | 93,000
Net recoveries of bad debt | $ 173,000 |  |

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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-BRD -Paragraph 80 -Subparagraph Exhibit 4-8, 3 -IssueDate 2006-05-01 -Chapter 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 + Details
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- Definition In accordance with the provisions of their lease agreement, this element represents allowable charges due a landlord from its tenant. In retail store and office building leases, for example, tenant reimbursements may cover items such as taxes, utilities, and common area expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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