Oblong Industries Acquisition - Pro Forma (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total revenue		$ 25,586	$ 29,806
Pro forma net loss		20,196	26,902
Oblong Industries
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenue from acquiree	$ 3,167
Net loss from acquiree	$ 3,360
Total revenue		15,926	17,249
Pro forma net loss		15,795	19,734
Glowpoint
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total revenue		9,660	12,557
Pro forma net loss		4,401	7,168
Incremental amortization for intangible assets | Oblong Industries
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Net loss		$ 1,393	$ 1,880