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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In February 2021, the Company committed to a plan to sell certain Voice assets in the United Kingdom as they were determined to be non-core assets. Such assets are recorded within the Voice, Backup, Security, and CPP reportable segment. On February 9, 2021, in a cash transaction, the Company completed the sale of these assets. Also in February 2021, the Company’s Board of Directors approved the exploration of strategic alternatives for the Company’s B2B Backup business.