Discontinued Operations and Dispositions B2B Backup and Voice Asset Sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) gain on sale of businesses	$ 0	$ (21,798)	$ 17,122
Goodwill impairment on business	$ 27,369	32,629	0
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]	(Loss) gain on sale of businesses
Disposal Group, Held-for-sale, Not Discontinued Operations | B2B Backup Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill impairment on business		32,600
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposal			$ 17,100
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Voice Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) gain on sale of businesses		2,800
Disposal Group, Disposed of by Sale, Not Discontinued Operations | B2B Backup Business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) gain on sale of businesses		(24,600)
Goodwill impairment on business	$ 27,400	$ 32,600