Long-Term Debt (Maturity Analysis For Operating and Finance Lease Liabilities) (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Long-Term Debt [Abstract]
2020	$ 42
Total lease payments	42
Less imputed interest	(1)
Total operating lease liabilities	41
2020	65
2021	39
Total lease payments	104
Less imputed interest	(2)
Total finance lease liabilities	$ 102