It represents as a mortgage loan on real estate final maturity date.

No definition available.

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Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

+ 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 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Total carrying amount of mortgage loans as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.6)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

+ Details

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

- Definition

The carrying amount of the outstanding balance due under the mortgage loan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

+ Details

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

- Definition

Amount of the contractual principal due at the origination of the mortgage loan (face amount).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

+ Details

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

- Definition

The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

+ References

+ Details

Name:	us-gaap_MortgageLoansOnRealEstateInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the contractual payment terms of the loan receivable including whether principal and interest is payable at a level or varying amount over the life of the loan, the amount of any balloon payment required at maturity, and any prepayment penalties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29.5)
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of prior lien on the real estate that secures the mortgage loan.

+ References

+ Details

Name:	us-gaap_MortgageLoansOnRealEstatePriorLiens1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

SCHEDULE IV MORTGAGE LOANS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Carrying Amount of Mortgage	$ 64,019
Accrued interest	6,147
Total notes and interest receivable	$ 70,166	$ 79,308	$ 71,376	$ 85,447
Mortgage Loans [Member] \| H198, LLC [Member] \| Las Vegas Land [Member]
Interest Rate	12.00%
Final Maturity Date	2020-01
Face Amount of Mortgage	$ 5,907
Carrying Amount of Mortgage	$ 5,907
Mortgage Loans [Member] \| H198, LLC [Member] \| McKinney Ranch Land [Member]
Interest Rate	12.00%
Final Maturity Date	2020-01
Carrying Amount of Mortgage	$ 4,290
Mortgage Loans [Member] \| Spyglass Apartments of Ennis [Member]
Interest Rate	5.00%
Final Maturity Date	2019-11
Carrying Amount of Mortgage	$ 4,522
Mortgage Loans [Member] \| Bellwether Ridge [Member]
Interest Rate	5.00%
Final Maturity Date	2020-05
Carrying Amount of Mortgage	$ 2,954
Mortgage Loans [Member] \| Parc at Windmill Farms [Member]
Interest Rate	5.00%
Final Maturity Date	2020-05
Carrying Amount of Mortgage	$ 2,505
Mortgage Loans [Member] \| Oulan-Chikh Family Trust [Member]
Interest Rate	8.00%
Final Maturity Date	2021-03
Periodic Payment Terms	Excess cash flow
Face Amount of Mortgage	$ 174
Carrying Amount of Mortgage	$ 174
Mortgage Loans [Member] \| Unified Housing Foundation, Inc. (Echo Station) [Member] \| 100% Interest in UH of Temple, LLC [Member]
Interest Rate	12.00%
Final Maturity Date	2032-12
Periodic Payment Terms	Excess cash flow
Prior Liens	$ 9,719
Face Amount of Mortgage	1,809
Carrying Amount of Mortgage	$ 1,481
Mortgage Loans [Member] \| Unified Housing Foundation, Inc. (Lakeshore Villas/HFS of Humble,LLC) (35.1% of cash flow) [Member] \| Interest in Unified Housing Foundation Inc. [Member]
Interest Rate	12.00%
Final Maturity Date	2032-12
Periodic Payment Terms	Excess cash flow
Prior Liens	$ 15,756
Face Amount of Mortgage	8,836
Carrying Amount of Mortgage	$ 6,368
Mortgage Loans [Member] \| Unified Housing Foundation, Inc. (Limestone Ranch) [Member] \| 100% Interest in UH of Vista Ridge, LLC [Member]
Interest Rate	12.00%
Final Maturity Date	2032-12
Periodic Payment Terms	Excess cash flow
Prior Liens	$ 18,641
Face Amount of Mortgage	12,335
Carrying Amount of Mortgage	$ 7,953
Mortgage Loans [Member] \| Unified Housing Foundation, Inc. (Timbers of Terrell) [Member] \| 100% Interest in UH of Terrell, LLC [Member]
Interest Rate	12.00%
Final Maturity Date	2032-12
Periodic Payment Terms	Excess cash flow
Prior Liens	$ 7,294
Face Amount of Mortgage	1,702
Carrying Amount of Mortgage	$ 1,323
Mortgage Loans [Member] \| Unified Housing Foundation, Inc. (Tivoli) [Member] \| 100% Interest in UH of Tivoli, LLC [Member]
Interest Rate	12.00%
Final Maturity Date	2032-12
Periodic Payment Terms	Excess cash flow
Prior Liens	$ 10,398
Face Amount of Mortgage	12,761
Carrying Amount of Mortgage	$ 6,139
Loans [Member] \| Unified Housing Foundation, Inc. (Lakeshore Villas/HFS of Humble,LLC) (68.5% of cash flow) [Member]
Interest Rate	12.00%
Final Maturity Date	2032-12
Periodic Payment Terms	Excess cash flow
Prior Liens	$ 15,756
Face Amount of Mortgage	2,189
Carrying Amount of Mortgage	$ 2,000
Loans [Member] \| Unified Housing Foundation, Inc. [Member]
Interest Rate	12.00%
Final Maturity Date	2020-06
Periodic Payment Terms	Excess cash flow
Face Amount of Mortgage	$ 1,261
Carrying Amount of Mortgage	$ 5,760
Loans [Member] \| Unified Housing Foundation, Inc. [Member]
Interest Rate	12.00%
Final Maturity Date	2018-12
Periodic Payment Terms	Excess cash flow
Face Amount of Mortgage	$ 3,994
Carrying Amount of Mortgage	$ 3,994
Loans [Member] \| Unified Housing Foundation, Inc. [Member]
Interest Rate	12.00%
Final Maturity Date	2018-12
Periodic Payment Terms	Excess cash flow
Face Amount of Mortgage	$ 6,407
Carrying Amount of Mortgage	$ 6,407
Loans [Member] \| Various Related Party Notes [Member]
Periodic Payment Terms	Excess cash flow
Face Amount of Mortgage	$ 1,420
Carrying Amount of Mortgage	465
Loans [Member] \| Various Non-Related Party Notes [Member]
Face Amount of Mortgage	496
Carrying Amount of Mortgage	796
Loans [Member] \| Various Non-Related Party Notes [Member]
Face Amount of Mortgage	4,742
Carrying Amount of Mortgage	$ 981