Number of properties under contract of sale.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of interest expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of operating expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of rental income attributable to disposal group, including, but not limited to, discontinued operation.

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Gross amount of debt extinguished.

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Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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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.

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Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Amount after tax of income (loss) from a discontinued operation attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Sale and Disposal of Properties and Discontinued Operations ( Details)				6 Months Ended
	Jan. 13, 2015 USD ($)	Feb. 03, 2014 USD ($) property	Dec. 31, 2013 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)
Sale and Disposal of Properties and Discontinued Operations
Net proceeds from sale of real estate				$ 16,025,000	$ 5,177,000
Income from discontinued operations					13,000
Property located in Cherry Hill, NJ \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Consolidated JV
Sale and Disposal of Properties and Discontinued Operations
Net proceeds from sale of real estate	$ 16,025,000
Gain (loss) on sale of property	5,392,000
Mortgage balance paid off	7,376,000
Swap termination expense	472,000
Write-off of deferred financing costs	249,000
Property located in Cherry Hill, NJ \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Consolidated JV \| Non-Controlling Interests in Joint Ventures
Sale and Disposal of Properties and Discontinued Operations
Non-controlling interest's share of income from the transaction	$ 1,320,000
Property located in Michigan \| Discontinued Operations, Disposed of by Sale
Sale and Disposal of Properties and Discontinued Operations
Net proceeds from sale of real estate		$ 5,177,000
Number of properties under contract of sale \| property		2
Impairment charge			$ 61,700
Income from discontinued operations					13,000
Rental income					141,000
Real estate expenses					17,000
Mortgage interest					$ 111,000