Deferred costs and other intangibles (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Acquired Indefinite-lived Intangible Assets
Deferred leasing costs	$ 13,497	$ 12,526
Deferred financing costs	12,796	12,147
Intangible assets:
Intangible assets	37,040	35,958
Less: accumulated amortization	(18,412)	(15,385)
Total	18,628	20,573
Value of In-place Leases
Intangible assets:
Intangible assets	5,547	6,085
Trademark
Intangible assets:
Intangible assets	3,100	3,100
Database
Intangible assets:
Intangible assets	$ 2,100	$ 2,100

- Definition

For an unclassified balance sheet, this element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This amount is before considering accumulated amortization representing the periodic charge to earnings to recognize the deferred costs over the term of the related lease.

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