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Investments in Real Estate and Real Estate Under Construction Summary of acquisitions and build-to-suit transactions (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
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Sep. 30, 2013
Investments in Real Estate and Real Estate Under Construction [Line Items] |  |
Initial Cost Basis | $ 166,468 |
Land | 20,055 |
Building and Improvements | 132,401 |
Lease in-place Value | 14,012 |
Industrial Property [Member] | Long Island City New York [Member] |  |
Investments in Real Estate and Real Estate Under Construction [Line Items] |  |
Initial Cost Basis | 42,124 |
Land | 0 |
Building and Improvements | 42,124 |
Lease in-place Value | 0 |
Industrial Property [Member] | Houston, Texas [Member] |  |
Investments in Real Estate and Real Estate Under Construction [Line Items] |  |
Initial Cost Basis | 81,400 |
Land | 15,055 |
Building and Improvements | 57,949 |
Lease in-place Value | 8,396 |
Office Property [Member] | Denver Colorado [Member] |  |
Investments in Real Estate and Real Estate Under Construction [Line Items] |  |
Initial Cost Basis | 34,547 | [1]
Land | 2,207 | [1]
Building and Improvements | 26,724 | [1]
Lease in-place Value | 5,616 | [1]
Business Combination, Additional Consideration Transferred | 3,825 |
Retail Property [Member] | Tuscaloosa Alabama [Member] |  |
Investments in Real Estate and Real Estate Under Construction [Line Items] |  |
Initial Cost Basis | 8,397 | [2]
Land | 2,793 | [2]
Building and Improvements | 5,604 | [2]
Lease in-place Value | 0 | [2]
Payments for Leasing Costs | $ 323 |
[1] | The Company incurred additional initial costs of $3,825 which are included in “Other assets” in the accompanying unaudited condensed consolidated balance sheet.
[2] | The Company incurred leasing costs of $323. The property was sold in September 2013.

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired. + References No definition available. + Details
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- Definition Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 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 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of cash outflow for costs that are essential to originate the lease and would not otherwise have been incurred without the lease agreement. Amount includes, but is not limited to, cash outflows to evaluate the lessee's credit condition, guarantees, and collateral and cash outflows for costs incurred in negotiating, processing, and executing the lease agreement. + References No definition available. + Details
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