Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash received during the period for interest	$ 8	$ 87
Cash paid during the period for interest	3	1,023
Cash paid during the period for income taxes	29	10
Operating cash outflows from operating leases	360	1,656
Operating cash outflows from finance leases (interest)	3	2
Financing cash outflows from finance leases	25	17
NONCASH FINANCING ACTIVITIES:
Shares issued in business combinations	0	28,610
Shares issued for asset purchase	0	1,692
Conversion of notes, including converted accumulated interest	0	147
Right-of-use lease assets and financing	259	0
Warrants issued for settlement agreement	$ 653	$ 0