Mortgage Loans on Real Estate (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Mortgage Loans on Real Estate
Prior Liens	$ 11,967,000
Face Amount of Mortgages	198,608,000
Carrying Amount of Mortgages	146,987,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	500,000
First Mortgage Texas MOB 1
Mortgage Loans on Real Estate
Interest Rate	6.18%
Final Maturity Date	Dec. 31, 2017
Periodic Payment Terms	$133,300
Prior Liens	0
Face Amount of Mortgages	25,936,000
Carrying Amount of Mortgages	25,864,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage Massachusetts SH NNN
Mortgage Loans on Real Estate
Interest Rate	7.60%
Final Maturity Date	Dec. 31, 2016
Periodic Payment Terms	$130,934
Prior Liens	0
Face Amount of Mortgages	21,000,000
Carrying Amount of Mortgages	20,285,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage California HOS 1
Mortgage Loans on Real Estate
Interest Rate	10.39%
Final Maturity Date	Jun. 01, 2020
Periodic Payment Terms	$205,064
Prior Liens	0
Face Amount of Mortgages	25,050,000
Carrying Amount of Mortgages	18,546,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage California HOS 2
Mortgage Loans on Real Estate
Interest Rate	8.72%
Final Maturity Date	Dec. 01, 2017
Periodic Payment Terms	$127,158
Prior Liens	0
Face Amount of Mortgages	17,500,000
Carrying Amount of Mortgages	17,500,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage Texas MOB 2
Mortgage Loans on Real Estate
Interest Rate	6.18%
Final Maturity Date	Dec. 31, 2017
Periodic Payment Terms	$83,353
Prior Liens	0
Face Amount of Mortgages	16,402,000
Carrying Amount of Mortgages	16,173,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage United Kingdom SH NNN 1
Mortgage Loans on Real Estate
Interest Rate	7.00%
Final Maturity Date	Apr. 19, 2018
Periodic Payment Terms	$87,414
Prior Liens	0
Face Amount of Mortgages	24,032,000
Carrying Amount of Mortgages	15,002,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage United Kingdom SH NNN 2
Mortgage Loans on Real Estate
Interest Rate	7.00%
Final Maturity Date	Nov. 21, 2018
Periodic Payment Terms	$52,667
Prior Liens	0
Face Amount of Mortgages	23,038,000
Carrying Amount of Mortgages	9,219,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage Georgia MOB 1
Mortgage Loans on Real Estate
Interest Rate	6.50%
Final Maturity Date	Oct. 01, 2014
Periodic Payment Terms	$38,556
Prior Liens	0
Face Amount of Mortgages	6,100,000
Carrying Amount of Mortgages	5,940,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage United Kingdom SH NNN 3
Mortgage Loans on Real Estate
Interest Rate	7.54%
Final Maturity Date	Jul. 31, 2015
Periodic Payment Terms	$21,227
Prior Liens	0
Face Amount of Mortgages	3,315,000
Carrying Amount of Mortgages	3,315,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage Texas SH NNN 1
Mortgage Loans on Real Estate
Interest Rate	7.50%
Final Maturity Date	Oct. 31, 2018
Periodic Payment Terms	$12,887
Prior Liens	0
Face Amount of Mortgages	8,800,000
Carrying Amount of Mortgages	2,023,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage Texas SH NNN 2
Mortgage Loans on Real Estate
Interest Rate	7.50%
Final Maturity Date	Oct. 31, 2018
Periodic Payment Terms	$11,639
Prior Liens	0
Face Amount of Mortgages	8,800,000
Carrying Amount of Mortgages	1,827,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage Texas SH NNN 3
Mortgage Loans on Real Estate
Interest Rate	10.50%
Final Maturity Date	Mar. 01, 2014
Periodic Payment Terms	$56,574
Prior Liens	0
Face Amount of Mortgages	2,635,000
Carrying Amount of Mortgages	534,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
First Mortgage Arizona SH NNN
Mortgage Loans on Real Estate
Interest Rate	3.55%
Final Maturity Date	Jan. 01, 2014
Periodic Payment Terms	$12,275
Prior Liens	0
Face Amount of Mortgages	4,500,000
Carrying Amount of Mortgages	500,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	500,000
First Mortgage Georgia MOB 2
Mortgage Loans on Real Estate
Interest Rate	8.11%
Final Maturity Date	Oct. 01, 2014
Periodic Payment Terms	$1,676
Prior Liens	0
Face Amount of Mortgages	800,000
Carrying Amount of Mortgages	243,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
Second Mortgage Connecticut SH NNN
Mortgage Loans on Real Estate
Interest Rate	8.11%
Final Maturity Date	Apr. 01, 2018
Periodic Payment Terms	$31,909
Prior Liens	6,536,000
Face Amount of Mortgages	5,300,000
Carrying Amount of Mortgages	4,616,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
Second Mortgage Florida SH NNN 1
Mortgage Loans on Real Estate
Interest Rate	12.17%
Final Maturity Date	Jul. 01, 2018
Periodic Payment Terms	$27,908
Prior Liens	4,107,000
Face Amount of Mortgages	2,700,000
Carrying Amount of Mortgages	2,700,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
Second Mortgage Florida SH NNN 2
Mortgage Loans on Real Estate
Interest Rate	12.17%
Final Maturity Date	Nov. 01, 2018
Periodic Payment Terms	$27,685
Prior Liens	1,324,000
Face Amount of Mortgages	2,700,000
Carrying Amount of Mortgages	2,700,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0