Long-Term Debt And Lease Liabilities (Maturity Analysis For Operating and Finance Lease Liabilities) (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Long-Term Debt And Lease Liabilities [Abstract]
2019 (April 2019 - December 2019)	$ 46
2020	42
Total lease payments	88
Less imputed interest	(4)
Total operating lease liabilities	84
2019 (April 2019 - December 2019)	65
2020	37
2021	16
Total lease payments	118
Less imputed interest	(6)
Total finance lease liabilities	$ 112