Discontinued Operations and Dispositions B2B Backup and Voice Asset Sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of businesses	$ 0	$ 0	$ (21,798)
Goodwill impairment on business	$ 56,850	$ 27,369	32,629
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 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 on sale of businesses			(24,600)
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