Fair Value Measurements And Derivative Instruments (Schedule Of Fair Value Assets And (Liabilities) Carried At Fair Value And Measured On Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	$ 340
Derivative liability		$ (8)
Convertible debt	(1,038)	(1,315)
Total	(698)	(1,323)
Level 2 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total	3	(8)
Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Convertible debt	(1,038)	(1,315)
Total	(701)	(1,315)
Interest Rate Derivatives [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	3
Derivative liability		(8)
Interest Rate Derivatives [Member] | Level 2 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	3
Derivative liability		$ (8)
Series E Preferred Embedded Redemption Option [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	337
Series E Preferred Embedded Redemption Option [Member] | Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Derivative asset	$ 337