Investments In and Advances to Partnerships - Pending and Completed Sales (Details) (USD $)	0 Months Ended		0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended
Jun. 29, 2012 New Sharon Woods [Member]	Mar. 31, 2013 New Sharon Woods [Member]	Aug. 02, 2012 Chestnut Apartments [Member]	Mar. 31, 2013 Chestnut Apartments [Member]	Aug. 02, 2012 Westwood Village [Member]	Mar. 31, 2013 Westwood Village [Member]	Aug. 29, 2012 Traverse City elderly, LP [Member]	Dec. 17, 2012 Capitol Senior Limited Dividend Housing Association Limited Partnership [Member]
Schedule of Equity Method Investments [Line Items]
Sale price of investment	$ 1		$ 5,440,000		$ 3,085,000		$ 299,990	$ 6,245,328
Investment basis		0		1,208,766		492,989
Expected proceeds from sale				$ 3,500,000		$ 2,150,000

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=16385135&loc=d3e33749-111570

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant