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Real Estate Assets and Lease Intangibles, Acquisitions of Properties (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 Unit | Dec. 31, 2012 Unit
Real Estate Properties [Line Items] |  |
Promissory note issued for property acquired | $ 89,551,724 | $ 92,480,363
4 Model Home properties in Texas [Member] |  |
Real Estate Properties [Line Items] |  |
Number of units acquired (in units) | 4 |
Purchase price of property acquired | 1,100,000 |
Cash payment for the properties acquired | 500,000 |
Promissory note issued for property acquired | 600,000 |
Sparky's Lancaster Self Storage [Member] |  |
Real Estate Properties [Line Items] |  |
Number of units acquired (in units) | 608 |
Purchase price of property acquired | 3,700,000 |
Cash payment for the properties acquired | 3,700,000 |
Promissory note issued for property acquired | 1,965,504 | 0
Rentable square feet | 71,000 |
Occupancy rate | 65.00% |
Number of months of operations included in the results of operations | 7 months |
Fixed interest rate on mortgage (in hundredths) | 5.00% |
Allocated Purchase Price of Properties Acquired [Abstract] |  |
Land | 949,000 |
Buildings and other | 2,701,000 |
Total purchase price | 3,650,000 |
1 Model Home property in Texas [Member] |  |
Real Estate Properties [Line Items] |  |
Number of units acquired (in units) | 1 | 1
Purchase price of property acquired | 500,000 | 380,000
Cash payment for the properties acquired | 200,000 | 150,000
Promissory note issued for property acquired | 300,000 | 230,000
2 Model Home properties in Texas [Member] |  |
Real Estate Properties [Line Items] |  |
Number of units acquired (in units) | 2 |
Purchase price of property acquired | 600,000 |
Cash payment for the properties acquired | 200,000 |
Promissory note issued for property acquired | 400,000 |
7 Model Home properties in Pennsylvania [Member] |  |
Real Estate Properties [Line Items] |  |
Number of units acquired (in units) | 7 |
Purchase price of property acquired | 2,000,000 |
Cash payment for the properties acquired | 900,000 |
Promissory note issued for property acquired | 1,100,000 |
19 Model Home properties in California [Member] |  |
Real Estate Properties [Line Items] |  |
Number of units acquired (in units) |  | 19
Purchase price of property acquired |  | 8,200,000
Cash payment for the properties acquired |  | 3,700,000
Promissory note issued for property acquired |  | 4,500,000
Rite Aid [Member] |  |
Real Estate Properties [Line Items] |  |
Purchase price of property acquired |  | 1,100,000
Cash payment for the properties acquired |  | 1,100,000
Rentable square feet |  | 17,600
Allocated Purchase Price of Properties Acquired [Abstract] |  |
Land |  | 366,000
Buildings and other |  | 759,000
Tenant improvements |  | 0
In-place leases |  | 0
Leasing costs |  | 0
Total purchase price |  | 1,125,000
Shoreline Medical Building [Member] |  |
Real Estate Properties [Line Items] |  |
Purchase price of property acquired |  | 6,400,000
Cash payment for the properties acquired |  | 2,300,000
Promissory note issued for property acquired | 3,959,914 | 4,067,514
Rentable square feet | 15,335 | 15,335
Number of stories in building |  | 2
Area of land |  | 38,600
Distance from Half Moon Bay south to San Francisco (in miles) |  | 25
Distance from Half Moon Bay west to San Mateo (in miles) |  | 10
Fixed interest rate on mortgage (in hundredths) | 5.10% | 5.10%
Allocated Purchase Price of Properties Acquired [Abstract] |  |
Land |  | 1,820,000
Buildings and other |  | 4,311,000
Tenant improvements |  | 0
In-place leases |  | 83,000
Leasing costs |  | 136,000
Total purchase price |  | 6,350,000
1 Model Home property in Texas [Member] |  |
Real Estate Properties [Line Items] |  |
Number of units acquired (in units) |  | 1
Purchase price of property acquired |  | 365,000
Cash payment for the properties acquired |  | 146,000
Promissory note issued for property acquired |  | 219,000
Number of Model Homes under lease contract | 1 |
14 Model Home properties in New Jersey and Pennsylvania [Member] |  |
Real Estate Properties [Line Items] |  |
Number of units acquired (in units) |  | 14
Purchase price of property acquired |  | 5,000,000
Cash payment for the properties acquired |  | 2,000,000
Promissory note issued for property acquired |  | 3,000,000
The Presidio [Member] |  |
Real Estate Properties [Line Items] |  |
Purchase price of property acquired |  | 7,300,000
Cash payment for the properties acquired |  | 1,600,000
Promissory note issued for property acquired | 5,492,375 | 5,617,671
Rentable square feet | 80,800 | 80,800
Number of stories in building |  | 4
Fixed interest rate on mortgage (in hundredths) | 5.60% | 5.60%
Allocated Purchase Price of Properties Acquired [Abstract] |  |
Land |  | 1,325,000
Buildings and other |  | 4,969,400
Tenant improvements |  | 816,500
In-place leases |  | 27,400
Leasing costs |  | 136,700
Total purchase price |  | 7,275,000
6 Model Home properties in Texas [Member] |  |
Real Estate Properties [Line Items] |  |
Number of units acquired (in units) |  | 14
Purchase price of property acquired |  | 3,900,000
Cash payment for the properties acquired |  | 2,000,000
Promissory note issued for property acquired |  | 1,900,000
Number of Model Homes under lease contract |  | 14
Model Home Properties [Member] |  |
Allocated Purchase Price of Properties Acquired [Abstract] |  |
Land | 713,630 | 1,923,852
Buildings and other | 345,759 | 15,214,443
Tenant improvements |  | 0
In-place leases |  | 0
Leasing costs |  | 0
Total purchase price | $ 1,059,389 | $ 17,138,295

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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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