Mortgage Notes Payable Schedule of Aggregate Principal Payments On Mortgage Notes (Tables)

12 Months Ended

Dec. 31, 2015

Mortgage Notes Payable [Abstract]

Schedule of Aggregate Principal Payments On Mortgage Notes [Table Text Block]

Contractual aggregate principal payments of mortgage notes payable at December 31, 2015 are as follows: 

	Principal Payments
	(in thousands)
2016	$	576,864
2017	2,067,654
2018	18,633
2019	19,670
2020	20,766
Thereafter	654,892
Total aggregate principal payments	3,358,479
Unamortized balance of historical fair value adjustments	80,235
Total carrying value of mortgage notes payable	$	3,438,714