Segment Reporting - Concentration Percentage (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	100.00%	100.00%
Oblong (formerly Glowpoint) | Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	40.60%	75.30%
Oblong Industries | Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	59.40%	24.70%
Customer A | Oblong (formerly Glowpoint) | Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%	17.80%
Customer A | Oblong (formerly Glowpoint) | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	14.10%
Customer B | Oblong Industries | Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%
Customer B | Oblong Industries | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	20.10%
Customer C | Oblong (formerly Glowpoint) | Revenue
Concentration Risk [Line Items]
Concentration risk, percentage	0.00%	19.80%
Customer C | Oblong Industries | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	12.00%	16.00%
Customer D | Oblong Industries | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage	0.00%	18.00%
Customer E | Oblong (formerly Glowpoint) | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk, percentage		11.50%