Leases (Schedule of future minimum lease payments and balance sheet locations) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Leases [Abstract]
2020	$ 235
2021	201
2022	206
2023	174
2024	59
Total minimum lease payments	875
Less imputed interest	(75)
Total operating lease liability	$ 800	$ 500
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other	Other
Operating Lease, Liability, Noncurrent	$ 800
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other