Debt (Components of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Debt
Amortization of deferred financing costs	$ 1,013	$ 1,031
Interest Costs Capitalized	0	(576)
Total Interest Expense	14,892	13,508
Secured Debt
Debt
Interest expense	4,020	5,164
Revolving credit facility and term loans
Debt
Interest expense	$ 9,859	$ 7,889