Real Estate Investments (Schedule of Intangible Assets) (Details) $ in Thousands	Jun. 30, 2016 USD ($)
Amortization Expense
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense, July 1, 2016 - December 31, 2016	$ 5,180
Amortization expense 2017	9,933
Amortization expense 2018	8,976
Amortization expense 2019	8,592
Amortization expense 2020	8,354
Amortization Expense | In-place leases
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense, July 1, 2016 - December 31, 2016	5,019
Amortization expense 2017	9,612
Amortization expense 2018	8,655
Amortization expense 2019	8,271
Amortization expense 2020	8,033
Amortization Expense | Other intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense, July 1, 2016 - December 31, 2016	161
Amortization expense 2017	321
Amortization expense 2018	321
Amortization expense 2019	321
Amortization expense 2020	321
Rental Income
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense, July 1, 2016 - December 31, 2016	2,903
Amortization expense 2017	5,240
Amortization expense 2018	4,455
Amortization expense 2019	4,070
Amortization expense 2020	3,843
Below market lease amortization income, July 1, 2016 - December 31, 2016	3,613
Below market lease amortization income 2017	6,660
Below market lease amortization income 2018	5,875
Below market lease amortization income 2019	5,490
Below market lease amortization income 2020	5,250
Rental Income | Above-market leases
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense, July 1, 2016 - December 31, 2016	(710)
Amortization expense 2017	(1,420)
Amortization expense 2018	(1,420)
Amortization expense 2019	(1,420)
Amortization expense 2020	(1,407)
Hotel Expense | Above-market ground lease liability
Acquired Finite-Lived Intangible Assets [Line Items]
Above-market ground lease amortization income July 1, 2016 - December 31, 2016	(225)
Above-market ground lease amortization income 2017	(449)
Above-market ground lease amortization income 2018	(449)
Above-market ground lease amortization income 2019	(449)
Above-market ground lease amortization income 2020	$ (449)