Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 10,517	$ 11,559
Accumulated depreciation and amortization	(10,358)	(10,986)
Property and equipment, net	$ 159	573
Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	10 years
Network equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,665	4,957
Network equipment and software | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Network equipment and software | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 5,070	5,686
Computer equipment and software | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Computer equipment and software | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	5 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 690	741
Estimated Useful Life	5 years
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 92	$ 175
Office furniture and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Office furniture and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life	10 years