Intangible Assets - Annual Amortization of Intangible Assets, Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Assets
Total	$ 111,623	$ 99,403
Liabilities
Total	25,655	$ 26,010
Assets [Member]
Assets
2016	36,635
2017	19,814
2018	12,587
2019	11,288
2020	9,149
Thereafter	22,731
Finite Lived Intangible Assets Net Including Assets Held For Sale	112,204
Assets held for sale	(581)
Total	111,623
Liabilities [Member]
Liabilities
2016	7,595
2017	3,461
2018	2,217
2019	1,885
2020	1,337
Thereafter	9,352
Below Market Lease Including Assets Held for Sale	25,847
Assets held for sale	(192)
Total	$ 25,655