Intangible Assets and Liabilities (Details 1) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Acquired Intangible Assets Liabilities
Amortizable Intangible Assets	$ 73,008
Below-market rent
Acquired Intangible Assets Liabilities
Weighted-average useful life, intangible liabilities	22 years 1 month 6 days
Amortizable Intangible Liabilities	$ (1,833)
In-place lease
Acquired Intangible Assets Liabilities
Weighted average useful life, intangible assets	12 years
Amortizable Intangible Assets	$ 67,299
Above-market rent
Acquired Intangible Assets Liabilities
Weighted average useful life, intangible assets	10 years
Amortizable Intangible Assets	$ 619
Below-market ground leases
Acquired Intangible Assets Liabilities
Weighted average useful life, intangible assets	74 years
Amortizable Intangible Assets	$ 5,090