Leases (Schedule of Other Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Operating cash flows from operating leases	$ 1,012
Financing cash flows from finance leases	13
Right-of-use assets obtained in exchange for new finance lease liabilities	50
Right-of-use assets obtained in exchange for new operating lease liabilities	110
Finance lease right-of-use assets	40
Operating lease right-of-use assets	3,729	$ 4,267
Finance lease liability, current	16
Finance lease liability, non-current	24
Operating lease liabilities, current	775	964
Operating lease liabilities, non-current	$ 3,067	$ 3,432
Weighted average remaining lease terms - finance leases	2 years 3 months 29 days
Weighted average remaining lease terms - operating leases	4 years 5 months 1 day
Weighted average discount rate - finance leases	10.91%
Weighted average discount rate - operating leases	8.48%