Segment Reporting - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 5,328	$ 2,594
Revenue
Disaggregation of Revenue [Line Items]
Percentage of revenue	100.00%	100.00%
Glowpoint
Disaggregation of Revenue [Line Items]
Revenue	$ 2,045	$ 2,594
Glowpoint | Revenue
Disaggregation of Revenue [Line Items]
Percentage of revenue	38.38%	100.00%
Glowpoint | Assets
Disaggregation of Revenue [Line Items]
Percentage of revenue	100.00%		100.00%
Glowpoint | Video collaboration services
Disaggregation of Revenue [Line Items]
Revenue	$ 1,046	$ 1,566
Glowpoint | Video collaboration services | Revenue
Disaggregation of Revenue [Line Items]
Percentage of revenue	19.63%	60.37%
Glowpoint | Network services
Disaggregation of Revenue [Line Items]
Revenue	$ 925	$ 965
Glowpoint | Network services | Revenue
Disaggregation of Revenue [Line Items]
Percentage of revenue	17.36%	37.20%
Glowpoint | Professional and other services
Disaggregation of Revenue [Line Items]
Revenue	$ 74	$ 63
Glowpoint | Professional and other services | Revenue
Disaggregation of Revenue [Line Items]
Percentage of revenue	1.39%	2.43%
Oblong Industries
Disaggregation of Revenue [Line Items]
Revenue	$ 3,283	$ 0
Oblong Industries | Revenue
Disaggregation of Revenue [Line Items]
Percentage of revenue	62.00%	0.00%
Oblong Industries | Video collaboration services
Disaggregation of Revenue [Line Items]
Revenue	$ 2,322	$ 0
Oblong Industries | Video collaboration services | Revenue
Disaggregation of Revenue [Line Items]
Percentage of revenue	43.58%
Oblong Industries | Professional and other services
Disaggregation of Revenue [Line Items]
Revenue	$ 669	$ 0
Oblong Industries | Professional and other services | Revenue
Disaggregation of Revenue [Line Items]
Percentage of revenue	12.56%	0.00%
Oblong Industries | Licensing
Disaggregation of Revenue [Line Items]
Revenue	$ 292	$ 0
Oblong Industries | Licensing | Revenue
Disaggregation of Revenue [Line Items]
Percentage of revenue	5.48%	0.00%
Domestic
Disaggregation of Revenue [Line Items]
Revenue	$ 3,602	$ 1,796
Domestic | Oblong Industries | Assets
Disaggregation of Revenue [Line Items]
Percentage of revenue	81.00%
Foreign
Disaggregation of Revenue [Line Items]
Revenue	$ 1,726	$ 798
Foreign | Oblong Industries | Assets
Disaggregation of Revenue [Line Items]
Percentage of revenue	19.00%