Schedule IV: Mortgage Loans on Real Estate Mortgage Loan on Real Estate (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Mortgage Loans on Real Estate [Line Items]
Face Amount of Mortgages	$ 55,082
Carrying Amount of Mortgages	52,605	[1]
Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance at Beginning of Period	40,771		47,420	50,687
New Mortgage Loans	12,520		0	7,029
Accretion of Discount	64		64	64
Provision for Loan Loss Reserve	(150)		0	0
Collections of Principal	(598)		(6,707)	(10,304)
Interest	(2)		(6)	(56)
Balance at Close of Period	52,605		40,771	47,420
Borrower A [Member]
Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.75%
Final Maturity Date	Mar. 31, 2014
Periodic Payment Terms	Interest monthly and principal at maturity
Face Amount of Mortgages	9,800
Carrying Amount of Mortgages	9,800	[1]
Borrower B [Member]
Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.75%
Final Maturity Date	Dec. 26, 2014
Periodic Payment Terms	Interest monthly and principal at maturity
Face Amount of Mortgages	2,720
Carrying Amount of Mortgages	2,720	[1]
Borrower C [Member]
Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.75%
Final Maturity Date	Jun. 30, 2015
Periodic Payment Terms	Interest and principal monthly
Face Amount of Mortgages	10,325
Carrying Amount of Mortgages	9,821	[1]
Borrower D [Member]
Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.50%
Final Maturity Date	Dec. 22, 2016
Periodic Payment Terms	Interest and principal monthly
Face Amount of Mortgages	8,030
Carrying Amount of Mortgages	7,165	[1]
Borrower E [Member]
Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.35%
Final Maturity Date	Jun. 30, 2017
Periodic Payment Terms	Interest and principal monthly
Face Amount of Mortgages	24,207
Carrying Amount of Mortgages	$ 23,099	[1]

[1] Carrying amount includes all applicable accrued interest and accretion of discount to date, net of amounts reserved for impairment.