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Properties, net (Details 6) (USD $) | 9 Months Ended | 0 Months Ended
--- | --- | ---
Sep. 30, 2012 | Jul. 11, 2012 13857 McLearen Road [Member] Y sqft | Jul. 11, 2012 13857 McLearen Road [Member] Tenant relationship value Y | Jul. 11, 2012 13857 McLearen Road [Member] In-place lease value Y | Jul. 11, 2012 13857 McLearen Road [Member] Above-market leases Y
Acquisitions |  |  |  |  |
Costs expensed in connection with acquisition of operating properties | $ 229,000 |  |  |  |
Acquisitions |  |  |  |  |
Square footage of real estate properties (in square feet) |  | 202,000 |  |  |
Acquired property, percentage leased (as a percent) |  | 100.00% |  |  |
Land, operating properties |  | 3,507,000 |  |  |
Building and improvements |  | 30,177,000 |  |  |
Intangible assets on real estate acquistions |  | 14,993,000 |  |  |
Total assets |  | 48,677,000 |  |  |
Below market leases |  | (369,000) |  |  |
Intangible assets on real estate acquisitions |  |  |  |  |
Gross carrying amount |  | 14,993,000 | 7,472,000 | 7,109,000 | 412,000
Weighted average amortization period of intangible assets (in years) |  | 7 | 10 | 5 | 5
Total acquisition cost |  | $ 48,308,000 |  |  |

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- Definition The aggregate amount assigned to a major class of finite-lived intangible assets acquired either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 59 -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 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=6909708&loc=d3e1043-128460 + Details
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- Definition The net amount recognized as of the acquisition date for the aggregate identifiable assets acquired in excess of or less than the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph i -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 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=6910123&loc=d3e2207-128464 + Details
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