Notes and Bonds Payable (Details 5) (USD $)	6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Mortgage Notes 7.765% [Member] | Life Insurance Co [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	$ 4,700,000
Effective Interest rate	7.765%
Maturity Date	Jan. 17, 2011
Collateral	MOB
Investment in Collateral	11,500,000
Mortgage notes payable carrying amount	2,100,000	2,200,000
Mortgage Notes 5.550% [Member] | Commercial Bank [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	1,800,000
Effective Interest rate	5.55%
Maturity Date	Oct. 30, 2011
Collateral	OTH
Investment in Collateral	7,900,000
Mortgage notes payable carrying amount	1,700,000	1,700,000
Mortgage Notes 5.490% [Member] | Life Insurance Co [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	15,100,000
Effective Interest rate	5.49%
Maturity Date	Jan. 16, 2011
Collateral	MOB
Investment in Collateral	32,700,000
Mortgage notes payable carrying amount	13,300,000	13,500,000
Mortgage Notes 6.480% [Member] | Commercial Bank [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	17,400,000
Effective Interest rate	6.48%
Maturity Date	May 15, 2011
Collateral	MOB
Investment in Collateral	19,900,000
Mortgage notes payable carrying amount	14,500,000	14,500,000
Mortgage Notes 6.110% [Member] | Commercial Bank [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	12,000,000
Effective Interest rate	6.11%
Maturity Date	Jul. 15, 2011
Collateral	2 MOBs
Investment in Collateral	19,500,000
Mortgage notes payable carrying amount	9,800,000	9,700,000
Mortgage Notes 7.650% [Member] | Commercial Bank [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	15,200,000
Effective Interest rate	7.65%
Maturity Date	Jul. 20, 2011
Collateral	MOB
Investment in Collateral	20,200,000
Mortgage notes payable carrying amount	12,800,000	12,800,000
Mortgage Notes 6.810% [Member] | Life Insurance Co [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	1,500,000
Effective Interest rate	6.81%
Maturity Date	Jul. 16, 2011
Collateral	MOB
Investment in Collateral	2,200,000
Mortgage notes payable carrying amount	1,100,000	1,200,000
Mortgage Notes 6.430% [Member] | Commercial Bank [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	12,900,000
Effective Interest rate	6.43%
Maturity Date	Feb. 21, 2011
Collateral	MOB
Investment in Collateral	20,500,000
Mortgage notes payable carrying amount	11,400,000	11,500,000
Mortgage Notes 7.250% [Member] | Investment Fund [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	80,000,000
Effective Interest rate	7.25%
Maturity Date	Dec. 16, 2011
Collateral	15 MOBs
Investment in Collateral	154,000,000
Mortgage notes payable carrying amount	78,800,000	79,200,000
Mortgage Notes 5.530% [Member] | Life Insurance Co [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	7,000,000
Effective Interest rate	5.53%
Maturity Date	Jan. 18, 2011
Collateral	MOB
Investment in Collateral	14,500,000
Mortgage notes payable carrying amount	3,800,000	4,000,000
Mortgage Notes 6.550% [Member] | Investment Co [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	15,900,000
Effective Interest rate	6.55%
Maturity Date	Apr. 13, 2011
Collateral	MOB
Investment in Collateral	23,300,000
Mortgage notes payable carrying amount	15,400,000	15,600,000
Mortgage Notes 5.250% [Member] | Investment Co [Member]
Further details of company's mortgage notes payable
Mortgage Notes, face value	4,600,000
Effective Interest rate	5.25%
Maturity Date	Sep. 15, 2011
Collateral	MOB
Investment in Collateral	6,900,000
Mortgage notes payable carrying amount	4,400,000	4,400,000
Mortgage Notes Payable [Member]
Further details of company's mortgage notes payable
Investment in Collateral	333,300,000
Mortgage notes payable carrying amount	$ 169,061,000	$ 170,287,000