SCHEDULE IV MORTGAGE LOANS ON REAL ESTATE (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Mortgage Loans on Real Estate [Line Items]
Face Amount of Mortgages	$ 244,050,704
Carrying Amount of Mortgages	238,621,161
Maturity period of construction loan	10 years
Florida | Group 1
Mortgage Loans on Real Estate [Line Items]
Interest Rate	10.40%	[1]
Final Maturity Date	2030	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	15,900,000	[1]
Carrying Amount of Mortgages	15,896,641	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Maryland | Group 1
Mortgage Loans on Real Estate [Line Items]
Interest Rate	11.00%	[1]
Final Maturity Date	2023	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	74,927,751	[1]
Carrying Amount of Mortgages	69,927,759	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Maryland | Group 2
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.00%	[1]
Final Maturity Date	2046	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	10,000,000	[1]
Carrying Amount of Mortgages	10,000,000	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Maryland | Group 3
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.00%	[1]
Final Maturity Date	2046	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	9,500,000	[1]
Carrying Amount of Mortgages	9,500,000	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Maryland | Group 4
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.00%	[1]
Final Maturity Date	2046	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	5,500,000	[1]
Carrying Amount of Mortgages	5,500,000	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Michigan | Group 1
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.50%	[1]
Final Maturity Date	2022	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	5,310,000	[1]
Carrying Amount of Mortgages	5,310,000	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Michigan | Group 2
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.50%	[1]
Final Maturity Date	2021	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	5,573,500	[1]
Carrying Amount of Mortgages	5,573,500	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Michigan | Group 3
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.50%	[1]
Final Maturity Date		[1],[4]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	7,411,231	[1]
Carrying Amount of Mortgages	7,411,231	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Michigan | Group 4
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.50%	[1]
Final Maturity Date		[1],[4]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	4,340,209	[1]
Carrying Amount of Mortgages	4,340,209	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Michigan | Group 5
Mortgage Loans on Real Estate [Line Items]
Interest Rate	11.00%	[1]
Final Maturity Date	2021	[1]
Periodic Payment Terms	Interest plus $34,500 of principal payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	92,000,000	[1]
Carrying Amount of Mortgages	91,585,884	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Michigan | Group 6
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.00%	[1]
Final Maturity Date	2046	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	1,500,000	[1]
Carrying Amount of Mortgages	1,500,000	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Ohio | Group 1
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.00%	[1]
Final Maturity Date	2022	[1]
Periodic Payment Terms	Interest plus $1,600 of principal payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	6,112,406	[1]
Carrying Amount of Mortgages	6,100,330	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Ohio | Group 2
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.00%	[1]
Final Maturity Date	2022	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	345,011	[1]
Carrying Amount of Mortgages	345,011	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Ohio | Group 3
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.00%	[1]
Final Maturity Date	2022	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Face Amount of Mortgages	630,596	[1]
Carrying Amount of Mortgages	630,596	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]
Texas | Group 1
Mortgage Loans on Real Estate [Line Items]
Interest Rate	11.00%	[1]
Final Maturity Date	2013	[1]
Periodic Payment Terms	Interest payable monthly	[1]
Prior Liens	0	[1]
Face Amount of Mortgages	5,000,000	[1]
Carrying Amount of Mortgages	5,000,000	[1],[2],[3]
Principal Amount of Delinquent Loans Subject to Delinquent Principal or Interest		[1]

[1] Mortgage loans included in this schedule represent first mortgages on facilities used in the delivery of long-term healthcare of which such facilities are located in the states indicated.

[2] The aggregate cost for federal income tax purposes is equal to the carrying amount.

[3] Year Ended December 31, 2010 2011 2012 Balance at beginning of period $ 100,222,734 $ 108,556,518 $ 238,674,601 Additions during period - Placements 20,656,391 130,191,254 11,967,892 Deductions during period - collection of principal/other (12,322,607 ) (73,171 ) (12,021,332 ) Balance at close of period $ 108,556,518 $ 238,674,601 $ 238,621,161

[4] This loan is a construction loan and matures 10 years after construction is completed.