SCHEDULE IV (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Mortgage Loans on Real Estate [Line Items]
Prepayment fee	0.50%
Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance at the beginning of the period	$ 11,000		$ 0
New mortgage loans	151,173		11,000
Interest income added to principal	697		0
Balance at the end of the year	162,870		11,000
Mortgages
Mortgage Loans on Real Estate [Line Items]
Prior Liens	0
Principal Balance	148,925
Book Value	149,450
Construction Mortgages
Mortgage Loans on Real Estate [Line Items]
Prior Liens	0	[1],[2]
Principal Balance	162,870
Book Value	163,733
Onion Creek | Mortgages
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	8.50%	[3]
Prior Liens	0	[3]
Principal Balance	11,000	[3]
Book Value	11,040	[3]
Weston | Mortgages
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	9.00%	[1]
Prior Liens	0	[1]
Principal Balance	14,531	[1]
Book Value	14,608	[1]
Sun City West | Mortgages
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	9.00%	[3]
Prior Liens	0	[3]
Principal Balance	13,394	[3]
Book Value	13,459	[3]
Forest Park - Dallas | Mortgages
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	8.00%	[3]
Prior Liens	0	[3]
Principal Balance	110,000	[3]
Book Value	110,343	[3]
Forest Park - Fort Worth | Construction Mortgages
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	7.30%	[1],[2]
Principal Balance	11,880	[1],[2]
Book Value	12,119	[1],[2]
Other Construction Mortgages | Construction Mortgages
Mortgage Loans on Real Estate [Line Items]
Contractual Interest Rate	10.00%
Principal Balance	2,065
Book Value	$ 2,164

[1] Interest for the first 12 months and principal is deferred and due at the maturity date. Interest after the first 12 months is due monthly.

[2] The loan has a prepayment fee of 0.5% of the outstanding balance if prepaid before October 1, 2015.

[3] Interest is due monthly and principal is due at the maturity date.