Amount of additional loan amount committed to third party for future development.

No definition available.

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- Definition

Cumulative amount of funds for future infrastructure development disbursed to third party.

+ References

No definition available.

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- Definition

Number of transactions with seller financing.

+ References

No definition available.

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- Definition

Amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 40

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.U.Q2)

-URI http://asc.fasb.org/extlink&oid=6955272&loc=d3e221323-122791

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(4)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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- Definition

Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10(3))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 10

-Subparagraph 3

-Article 9

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- Definition

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

+ References

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 210.5-02.3)

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5

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- Definition

The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Mortgages and Notes Receivable (Details) (USD $)	12 Months Ended			3 Months Ended	12 Months Ended
Mortgages and Notes Receivable (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2014	Dec. 31, 2010 transactions
Mortgages and Notes Receivable, Net [Abstract]
Mortgages and notes receivable, allowance	$ (275,000)	$ (302,000)	$ (182,000)
Mortgages and notes receivable, net	13,116,000us-gaap_NotesReceivableNet	26,409,000us-gaap_NotesReceivableNet
Repayment of seller financing	17,239,000	405,000	1,776,000
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning notes receivable allowance	302,000	182,000		302,000
Recoveries/write-offs/other	(27,000)	120,000
Total notes receivable allowance	275,000	302,000	182,000
Seller Financing [Member]
Mortgages and Notes Receivable, Net [Abstract]
Mortgages and notes receivable, gross	0	16,454,000
Mortgages and notes receivable, allowance	0
Mortgages and notes receivable, net	0	16,454,000
Number of transactions with seller financing					2
Repayment of seller financing				16,500,000
Deferred gain on sale of real estate				400,000
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning notes receivable allowance	0			0
Total notes receivable allowance	0
Mortgage Receivable [Member]
Mortgages and Notes Receivable, Net [Abstract]
Mortgages and notes receivable, gross	10,869,000	9,435,000	8,648,000
Mortgages and notes receivable, allowance	0
Mortgages and notes receivable, net	10,869,000	9,435,000
Additional loan commitment to third party			8,400,000
Cumulative funds for future infrastructure disbursed to third party	1,100,000
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning notes receivable allowance	0			0
Total notes receivable allowance	0
Promissory Notes [Member]
Mortgages and Notes Receivable, Net [Abstract]
Mortgages and notes receivable, gross	2,522,000	822,000
Mortgages and notes receivable, allowance	(275,000)	(302,000)
Mortgages and notes receivable, net	2,247,000	520,000
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Total notes receivable allowance	$ 275,000	$ 302,000