2.4.0.80003 - Statement - Condensed Consolidated Statements of Operations (Unaudited)truefalsefalse1false USDfalsefalse$From2013-04-01to2013-06-30http://www.sec.gov/CIK0000790067duration2013-04-01T00:00:002013-06-30T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDPSharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$From2012-04-01to2012-06-30http://www.sec.gov/CIK0000790067duration2012-04-01T00:00:002012-06-30T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDPSharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$From2013-01-01to2013-06-30http://www.sec.gov/CIK0000790067duration2013-01-01T00:00:002013-06-30T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDPSharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDfalsefalse$From2012-01-01to2012-06-30http://www.sec.gov/CIK0000790067duration2012-01-01T00:00:002012-06-30T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDPSharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 1us-gaap_IncomeStatementAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Income Statement [Abstract]2false 2us-gaap_RealEstateRevenueNetus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse9334593345USD$falsetruefalse2truefalsefalse6612366123USD$falsetruefalse3truefalsefalse180845180845USD$falsetruefalse4truefalsefalse138742138742USD$falsetruefalsexbrli:monetaryItemTypemonetaryThe aggregate revenue from real estate operations during the reporting period.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=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 false2Rental income3false 2us-gaap_InterestAndOtherIncomeus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse539539falsefalsefalse2falsefalsefalse00  falsefalsefalse3truefalsefalse860860falsefalsefalse4truefalsefalse22312231falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).No definition available.false2Interest and other4false 2us-gaap_Revenuesus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse9388493884falsefalsefalse2truefalsefalse6612366123falsefalsefalse3truefalsefalse181705181705falsefalsefalse4truefalsefalse140973140973falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).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) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 true2Total income5false 2us-gaap_DirectCostsOfLeasedAndRentedPropertyOrEquipmentus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse103843103843falsefalsefalse2truefalsefalse7603876038falsefalsefalse3truefalsefalse190262190262falsefalsefalse4truefalsefalse147048147048falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of expense incurred and directly related to generating revenue from leased and rented property or equipment.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 210.5-03.2(c)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 false2Property operating costs6false 2us-gaap_OtherGeneralAndAdministrativeExpenseus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse72787278falsefalsefalse2truefalsefalse1327613276falsefalsefalse3truefalsefalse2032720327falsefalsefalse4truefalsefalse3449034490falsefalsefalsexbrli:monetaryItemTypemonetaryThe sum of expenses not otherwise specified in the taxonomy for managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.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 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 false2Other administrative expenses7false 2us-gaap_GeneralAndAdministrativeExpenseus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse1000310003falsefalsefalse2truefalsefalse1231912319falsefalsefalse3truefalsefalse2283722837falsefalsefalse4truefalsefalse2171921719falsefalsefalsexbrli:monetaryItemTypemonetaryThe aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.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 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 false2Administrative expense - affiliates8false 2us-gaap_InterestExpenseRelatedPartyus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse2463024630falsefalsefalse2truefalsefalse4273842738falsefalsefalse3truefalsefalse4925949259falsefalsefalse4truefalsefalse8289382893falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of interest expense incurred on a debt or other obligation to related party.No definition available.false2Interest - affiliates9false 2us-gaap_InterestExpenseus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse18261826falsefalsefalse2falsefalsefalse00  falsefalsefalse3truefalsefalse40184018falsefalsefalse4falsefalsefalse00  falsefalsefalsexbrli:monetaryItemTypemonetaryAmount of the cost of borrowed funds accounted for as interest expense.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 false2Interest10false 2us-gaap_Depreciationus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse2014120141falsefalsefalse2truefalsefalse2030120301falsefalsefalse3truefalsefalse4047240472falsefalsefalse4truefalsefalse4050640506falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 false2Depreciation11false 2us-gaap_CostsAndExpensesus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse167721167721falsefalsefalse2truefalsefalse164672164672falsefalsefalse3truefalsefalse327175327175falsefalsefalse4truefalsefalse326656326656falsefalsefalsexbrli:monetaryItemTypemonetaryTotal costs of sales and operating expenses for the period.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) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 true2Total expenses12false 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