Organization and Summary of Significant Accounting Policies (Summary of Estimated Useful Lives of Assets) (Detail)	12 Months Ended
	Dec. 31, 2014
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]
Tenant improvements	Lease term
Buildings [Member] | Minimum [Member]
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]
Buildings	20 years
Buildings [Member] | Maximum [Member]
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]
Buildings	40 years
Land improvements [Member]
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]
Buildings	15 years
Furniture/fixtures [Member] | Minimum [Member]
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]
Buildings	3 years
Furniture/fixtures [Member] | Maximum [Member]
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]
Buildings	10 years