Leases (Future Annual Minimum Lease Payments and Finance Lease Commitments) (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Operating Leases
2021	$ 52
2022
2023
2024
2025
Thereafter
Total undiscounted future minimum lease payments	52
Less imputed interest	(1)
Lease liability	51
Finance Leases
2021	1,029
2022	1,019
2023	1,011
2024	1,011
2025	1,011
Thereafter	18,261
Total undiscounted future minimum lease payments	23,342
Less imputed interest	(10,532)
Lease liability	12,810
12th Amendment [Member] | Hopewell Junction, NY [Member]
Finance Leases
Lease liability	$ 4,900