Debt (Schedule of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Schedule of Interest Expense [Abstract]
Interest expense on debt at contractual rates	$ 14,308	$ 11,637	$ 40,736	$ 33,579
Losses reclassified from accumulated other comprehensive income (loss) into interest expense	(390)	(27)	(1,031)	(326)
Capitalized interest	(161)	(50)	(476)	(123)
Amortization of debt issuance costs and debt discount	904	814	2,696	2,425
Total Interest Expense	$ 14,661	$ 12,374	$ 41,925	$ 36,207