Schedule IV - Schedule of Mortgage Loans on Real Estate (Detail)	12 Months Ended
Dec. 31, 2016 USD ($)
Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Face Amount of Mortgages	1,060,336,000
Carrying Amount of Mortgages	1,060,336,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member]
Mortgage Loans on Real Estate [Line Items]
Periodic Payment Terms	Payable in monthly installments of interest plus principal payable in full at maturity
Long-Term First Mortgage Loan [Member] \| Desert Valley Hospital [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	11.00%
Final Maturity Date	2022
Face Amount of Mortgages	$ 70,000,000
Carrying Amount of Mortgages	70,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| Desert Valley Hospital [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	11.60%
Final Maturity Date	2022
Face Amount of Mortgages	$ 20,000,000
Carrying Amount of Mortgages	20,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| Desert Valley Hospital [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	11.00%
Final Maturity Date	2022
Face Amount of Mortgages	$ 12,500,000
Carrying Amount of Mortgages	12,500,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| Chino Valley Medical Center [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	11.00%
Final Maturity Date	2022
Face Amount of Mortgages	$ 50,000,000
Carrying Amount of Mortgages	50,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| Paradise Valley Hospital [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	10.60%
Final Maturity Date	2022
Face Amount of Mortgages	$ 25,000,000
Carrying Amount of Mortgages	25,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| Ernest Mortgage Loan [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	9.60%
Final Maturity Date	2032
Face Amount of Mortgages	$ 112,836,000
Carrying Amount of Mortgages	112,836,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| Centinela Hospital Medical Center [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	11.00%
Final Maturity Date	2022
Face Amount of Mortgages	$ 100,000,000
Carrying Amount of Mortgages	100,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| Olympia Medical Center [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	11.20%
Final Maturity Date	2024
Face Amount of Mortgages	$ 20,000,000
Carrying Amount of Mortgages	20,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| St. Joseph Medical Center [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	8.50%
Final Maturity Date	2025
Face Amount of Mortgages	$ 30,000,000
Carrying Amount of Mortgages	30,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| St. Mary's Medical Center [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	8.50%
Final Maturity Date	2025
Face Amount of Mortgages	$ 10,000,000
Carrying Amount of Mortgages	10,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| Lake Huron Medical Center [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	8.50%
Final Maturity Date	2020
Face Amount of Mortgages	$ 10,000,000
Carrying Amount of Mortgages	10,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Long-Term First Mortgage Loan [Member] \| Steward Mortgage Loan [Member]
Mortgage Loans on Real Estate [Line Items]
Interest rate	7.50%
Final Maturity Date	2031
Face Amount of Mortgages	$ 600,000,000
Carrying Amount of Mortgages	600,000,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0

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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

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

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-Publisher FASB
-Name Accounting Standards Codification
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The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

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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
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Amount of principal due on loans that have been delinquent, which may exclude loans having interest delinquent for three months or less, as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of prior lien on the real estate that secures the mortgage loan.

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