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Acquisitions and Discontinued Operations (Narrative) (Details) (USD $)	1 Months Ended			3 Months Ended			6 Months Ended		12 Months Ended
	Apr. 30, 2014 acre	Mar. 31, 2014 acre	Jan. 31, 2014 acre	Jun. 30, 2014	Mar. 31, 2014 acre	Jun. 30, 2013 acre	Jun. 30, 2014	Jun. 30, 2013 acre	Dec. 31, 2013
Acres of land acquired	7.6		2.9
Payments to Acquire Land	$ 23,800,000		$ 15,600,000
Impairment associated with land holdings				1,152,000		0	1,152,000	0
Number of operating properties sold							0		12
Number of Apartment Units in operating Property Disposed									3,931
Acres of land sold	4.7	3.0			3.0	3.7		3.7
Sales price of land parcels	8,300,000	6,300,000						6,600,000
Gain on sale of land				$ 1,447,000	$ 354,000	$ 0	$ 1,801,000	$ 698,000

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- Definition

Acres of land acquired by the company during the period to be utilized in the development of multiple multifamily apartment communities.

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Number of apartment units in property disposed of or held for sale during the period.

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Number of operating properties sold during the period.

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Area of land held.

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



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-Name Accounting Standards Codification

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The cash outflow from the acquisition of real estate intended to generate income for the owner; excludes land acquired for use by the owner.

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-Publisher FASB

-Name Accounting Standards Codification

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The cash inflow from the sale of land held for investment; excludes sales of land held as inventory or productive use.

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