Acquired Lease Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of above and below Market Leases	$ 13,847	$ 9,890	$ 6,945
Amortization of acquired in place leases	$ 15,600	$ 13,200	$ 12,500