For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Foreign exchange rate used to remeasure amounts denominated in a currency other than functional currency into functional currency.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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Segment Reporting - Disaggregation of Revenue (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Disaggregation of Revenue [Line Items]
Foreign revenue		0.01
Total revenue	$ 15,333	$ 7,739	$ 15,333
Product Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue		$ 7,739	$ 15,333
Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		100.00%	100.00%
Managed Services \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue		$ 4,270	$ 6,227
Managed Services \| Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		55.20%	40.60%
Managed Services \| Assets \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		100.00%	100.00%
Managed Services \| Video collaboration services \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue		$ 854	$ 2,413
Managed Services \| Video collaboration services \| Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		11.00%	15.70%
Managed Services \| Network services \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue		$ 3,347	$ 3,611
Managed Services \| Network services \| Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		43.20%	23.60%
Managed Services \| Professional and other services \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue		$ 69	$ 203
Managed Services \| Professional and other services \| Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		0.90%	1.30%
Collaboration Products \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue		$ 3,469	$ 9,106
Collaboration Products \| Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		44.80%	59.40%
Collaboration Products \| Video collaboration services \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue		$ 3,367	$ 6,873
Collaboration Products \| Video collaboration services \| Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		43.50%	44.80%
Collaboration Products \| Professional and other services \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue		$ 0	$ 1,033
Collaboration Products \| Professional and other services \| Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		0.00%	6.70%
Collaboration Products \| Licensing \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Total revenue		$ 102	$ 1,200
Collaboration Products \| Licensing \| Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue		1.30%	7.80%
Domestic
Disaggregation of Revenue [Line Items]
Total revenue		$ 4,615	$ 10,288
Foreign
Disaggregation of Revenue [Line Items]
Total revenue		$ 3,124	$ 5,045