Debt (Components of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Debt
Amortization of deferred financing costs	$ 1,209	$ 1,024	$ 2,222	$ 2,056
Interest Costs Capitalized	0	(656)	0	(1,232)
Total Interest Expense	14,789	12,335	29,681	25,843
Secured Debt
Debt
Interest expense	3,963	3,673	7,983	8,836
Revolver and Term Loans
Debt
Interest expense	$ 9,617	$ 8,294	$ 19,476	$ 16,183