Segment Reporting - Concentration Percentage (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue
Concentration Risk [Line Items]
Concentration risk percentage	100.00%	100.00%	100.00%	100.00%
Glowpoint | Revenue
Concentration Risk [Line Items]
Concentration risk percentage	40.00%	100.00%	42.00%	100.00%
Oblong Industries | Revenue
Concentration Risk [Line Items]
Concentration risk percentage	60.00%	0.00%	58.00%	0.00%
Customer A | Glowpoint | Revenue
Concentration Risk [Line Items]
Concentration risk percentage	20.00%	26.00%	17.00%	23.00%
Customer A | Glowpoint | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage			20.00%	15.00%
Customer B | Oblong Industries | Revenue
Concentration Risk [Line Items]
Concentration risk percentage	12.00%	0.00%	19.00%	0.00%
Customer B | Oblong Industries | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage				0.00%
Customer C | Glowpoint | Revenue
Concentration Risk [Line Items]
Concentration risk percentage		25.00%		27.00%
Customer C | Glowpoint | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage				51.00%
Customer E | Oblong Industries | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage			15.00%	0.00%