Commitments and Contingencies (Information About Existing Operating Leases) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Commitments and Contingencies [Abstract]
Operating lease cost	$ 174	$ 143
Cash paid for operating leases	164	$ 149
Right-of-use assets obtained in exchange for operating lease liabilities	$ 680
Weighted average remaining lease term (in years)	3 years 11 months 16 days	1 year 3 months
Weighted-average discount rate	4.77%