Supplemental cash flow information related to leases is as follows for the six months period ended June 30: (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating cash outflow from operating leases	$ 368	$ 346
Weighted-average remaining lease term-finance leases (in years)	1 year 1 month 6 days	1 year 8 months 12 days
Weighted-average remaining lease term-operating leases (in years)	2 years 10 months 24 days	2 years 8 months 12 days
Weighted-average discount rate-finance leases	9.30%	9.30%
Weighted-average discount rate-operating leases	13.40%	14.60%