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Real Estate Assets and Lease Intangibles (Narratives) (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Real Estate and Accumulated Depreciation Disclosure [Abstract] |  |
Finite Lived Intangible Asset Useful Life | 19 years |
Business Acquisition [Line Items] |  |
Number Of Real Estate Properties |  | 7
Promissory note paid | $ 92,480,363 | $ 65,929,797
Rentable square feet | 80,800 |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Mortgage notes payable retired | 1,500,000 |
Model Home Properties Disposed [Member] |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Proceeds from Sale of Real Estate | 8,900,000 | 8,500,000
Gain Loss On Sale Of Properties | 260,360 |
Mortgage notes payable retired |  | 5,700,000
Model Home One In Texas [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties | 380,000 |
Cash Payment for the properties acquired | 150,000 |
Promissory note paid | 230,000 |
Model Home Nineteen in California [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties | 8,200,000 |
Cash Payment for the properties acquired | 3,700,000 |
Promissory note paid | 4,500,000 |
Shoreline Medical Building [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties | 6,400,000 |
Cash Payment for the properties acquired | 2,300,000 |
Rentable square feet | 15,335 |
Debt Instrument, Interest Rate, Stated Percentage | 5.10% |
Area of Land | 38,600 |
Model Home in New Jersey and Pennsylvania [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties | 5,000,000 |
Cash Payment for the properties acquired | 2,000,000 |
Promissory note paid | 3,000,000 |
Number of Units in Real Estate Property | 14 |
Model Home Two In Texas [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 450,000
Cash Payment for the properties acquired |  | 230,000
Promissory note paid |  | 220,000
Model Home Five California [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 1,500,000
Cash Payment for the properties acquired |  | 750,000
Promissory note paid |  | 750,000
Model Home Four South Carolina [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 1,000,000
Cash Payment for the properties acquired |  | 500,000
Promissory note paid |  | 500,000
Sparky's Rialto Self-Storage [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 400,000
Cash Payment for the properties acquired |  | 400,000
Area of Land |  | 3
Dakota Bank Buildings [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 9,600,000
Cash Payment for the properties acquired |  | 3,875,000
Rentable square feet |  | 120,000
Interest rate floor |  | 5.75%
Interest rate ceiling |  | 9.75%
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate |  | 3.00%
Model Home Three In Texas [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 600,000
Cash Payment for the properties acquired |  | 300,000
Promissory note paid |  | 300,000
Model Home Eight [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 1,900,000
Cash Payment for the properties acquired |  | 1,000,000
Promissory note paid |  | 900,000
Yucca Valley Retail Center [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties | 1,100,000 | 6,800,000
Cash Payment for the properties acquired | 1,100,000 | 3,500,000
Promissory note paid |  | 3,300,000
Rentable square feet | 17,600 | 86,000
Debt Instrument, Interest Rate, Stated Percentage |  | 5.62%
Occupancy Rate |  | 93.00%
Sparky's Sunrise Self-Storage [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 2,200,000
Cash Payment for the properties acquired |  | 2,200,000
Rentable square feet |  | 93,851
Number of Units in Real Estate Property |  | 737
Area of Land |  | 4.93
Port of San Diego Complex [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 14,500,000
Cash Payment for the properties acquired |  | 2,900,000
Promissory note paid |  | 9,500,000
Rentable square feet |  | 146,700
Area of Land |  | 6.13
PaymentsToAcquirePartnersInterestInRealEstatePartnershipNetOfCashAcquired |  | 500,000
MinorityInterestOwnershipPercentageByNoncontrollingOwners |  | 25.00%
Equity Method Investment, Ownership Percentage |  | 75.00%
Occupancy Rate |  | 51.70%
Preferred Stock, Shares Issued |  | 1,649.266
Model Home In South Carolina [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties |  | 300,000
Cash Payment for the properties acquired |  | 100,000
The Presidio [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Price for the properties | 7,300,000 |
Cash Payment for the properties acquired | $ 1,600,000 |
Debt Instrument, Interest Rate, Stated Percentage | 5.60% |

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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d -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. + Details
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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -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. + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The highest stated interest rate within the mortgage loans included in the loan grouping. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.3) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 + Details
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- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- Definition The cash outflow from the purchase of ownership in a partnership, the purpose of which is to construct, sell, hold or invest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph b -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 -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 -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. + Details
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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 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 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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