Lease Intangibles - Scheduled Amortization of Acquired Lease Intangible Assets and Assumed Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Acquired Lease Intangibles [Abstract]
Amortizable Intangible Assets, Net Carrying Amount	$ 119,002	$ 114,584
2017 (Remainder), Increase to Amortization	(25,081)
2018, Increase to Amortization	(18,466)
2019, Increase to Amortization	(14,273)
2020, Increase to Amortization	(11,760)
2021, Increase to Amortization	(9,304)
Thereafter, Increase to Amortization	(34,517)
Total, Increase to Amortization	(113,401)
2017 (Remainder), Net	(15,531)
2018, Net	(8,801)
2019, Net	(5,122)
2020, Net	(3,994)
2021, Net	(2,234)
Thereafter, Net	20,660
Total	(15,022)
Net Increase in Lease Revenues
Acquired Lease Intangibles [Abstract]
2017 (Remainder)	9,492
2018	9,607
2019	9,093
2020	7,708
2021	7,012
Thereafter	54,800
Amortizable Intangible Assets, Net Carrying Amount	97,712
Reduction of Rent Expense
Acquired Lease Intangibles [Abstract]
2017 (Remainder)	58
2018	58
2019	58
2020	58
2021	58
Thereafter	377
Amortizable Intangible Assets, Net Carrying Amount	$ 667