Debt (Capitalized Interest, Deferred Financing Costs and Debt Payoff Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Debt [Abstract]
Capitalized interest	$ 0	$ 0	$ 0	$ 0
Deferred costs, net of accumulated amortization	1,112		1,112		$ 1,383
Amortization of deferred costs	$ 614	640	1,262	1,300
Unamortized deferred costs and defeasance premiums expensed		$ 1,049	$ 274	$ 1,091