Fair Value Measurements and Derivative Instruments (Schedule of Fair Value Assets and (Liabilities) Carried at Fair Value and Measured on Recurring Basis) (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Convertible debt	$ (16,875)
Total	(17,755)
Level 2 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Total	(880)
Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Convertible debt	(16,875)
Total	(16,875)
Interest Rate Derivatives [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Interest rate derivatives	(880)
Interest Rate Derivatives [Member] | Level 2 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Interest rate derivatives	$ (880)