Fair Value Disclosures (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total Assets	$ 67,565
Total liabilities	(4,500)
Harrison Street Real Estate Capital I [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	212
Harrison Street Real Estate Capital V [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Total liabilities	(4,500)
Harrison Street Real Estate Capital VI [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	6,815
Harrison Street Real Estate Capital X [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	8,073
CSH Montreal LP [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	6,947
Land Parcels and Toledo [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	45,518
Fair Value, Inputs, Level 1 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total Assets	0
Total liabilities	0
Fair Value, Inputs, Level 1 [Member] | Harrison Street Real Estate Capital I [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Harrison Street Real Estate Capital V [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Total liabilities	0
Fair Value, Inputs, Level 1 [Member] | Harrison Street Real Estate Capital VI [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Harrison Street Real Estate Capital X [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | CSH Montreal LP [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Land Parcels and Toledo [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total Assets	0
Total liabilities	0
Fair Value, Inputs, Level 2 [Member] | Harrison Street Real Estate Capital I [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Harrison Street Real Estate Capital V [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Total liabilities	0
Fair Value, Inputs, Level 2 [Member] | Harrison Street Real Estate Capital VI [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Harrison Street Real Estate Capital X [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | CSH Montreal LP [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Land Parcels and Toledo [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Fair Value, Inputs, Level 3 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total Assets	67,565
Total liabilities	(4,500)
Fair Value, Inputs, Level 3 [Member] | Harrison Street Real Estate Capital I [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	212
Fair Value, Inputs, Level 3 [Member] | Harrison Street Real Estate Capital V [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	0
Total liabilities	(4,500)
Fair Value, Inputs, Level 3 [Member] | Harrison Street Real Estate Capital VI [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	6,815
Fair Value, Inputs, Level 3 [Member] | Harrison Street Real Estate Capital X [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	8,073
Fair Value, Inputs, Level 3 [Member] | CSH Montreal LP [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	6,947
Fair Value, Inputs, Level 3 [Member] | Land Parcels and Toledo [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments,Fair Value Disclosure	$ 45,518