Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Goodwill - Narrative (Details) $ in Thousands	9 Months Ended		12 Months Ended
Goodwill - Narrative (Details) $ in Thousands	Sep. 30, 2020 USD ($) reporting_unit	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	Oct. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Goodwill [Line Items]
Goodwill	$ 7,366		$ 7,907		$ 2,795
Number of reporting units \| reporting_unit	2
Impairment charges - goodwill	$ 541	$ 453	2,254
Glowpoint
Goodwill [Line Items]
Goodwill	0		541	$ 541	$ 2,795
Impairment charges - goodwill	541	$ 453	$ 2,254
Oblong Industries
Goodwill [Line Items]
Goodwill	$ 7,366			$ 7,366