Description of Business and Basis of Presentation (Details) ft² in Thousands			1 Months Ended
	Oct. 06, 2016 Rate	Oct. 06, 2016	Jan. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) ft²	Dec. 31, 2015 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of partnership units owned by the Company	98.00%	98.00%
Company's portfolio of real estate assets - Office space (square feet) | ft²				16,200
Company's portfolio of real estate assets - Retail space (square feet) | ft²				786
Variable Interest Entity [Line Items]
Reclassification of deferred financing costs				$ 4,548,000	$ 2,483,000
Accounting Standards Update 2015-03 | Other Assets
Variable Interest Entity [Line Items]
Reclassification of deferred financing costs					(2,500,000)
Accounting Standards Update 2015-03 | Long-term Debt
Variable Interest Entity [Line Items]
Reclassification of deferred financing costs					2,500,000
Callaway
Variable Interest Entity [Line Items]
Total assets				$ 0	$ 4,600,000
Callaway | Subsequent Event
Variable Interest Entity [Line Items]
Impairment loss on joint venture			$ 4,500,000