Acquisitions - Schedule of Business Acquisitions, by Acquisition (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Oct. 31, 2021	Jul. 31, 2021	Dec. 31, 2020
Liabilities assumed
Goodwill	$ 291,215			$ 95,192
e-bot7
Assets acquired
Cash			$ 1,325
Other current assets			706
Intangible assets			7,714
Other assets			221
Assets acquired			9,966
Liabilities assumed
Current liabilities assumed			(1,055)
Long-term liabilities assumed			(3,063)
Deferred tax liabilities, non-current			(315)
Total liabilities assumed			(4,433)
Net assets acquired			5,533
Total acquisition consideration			50,678
Goodwill			$ 45,145
VoiceBase
Assets acquired
Cash		$ 2,367
Other current assets		611
Intangible assets		28,810
Other assets		56
Assets acquired		31,844
Liabilities assumed
Current liabilities assumed		(1,473)
Deferred tax liabilities, non-current		(267)
Total liabilities assumed		(1,740)
Net assets acquired		30,104
Total acquisition consideration		111,369
Goodwill		81,265
Tenfold
Assets acquired
Cash		3,770
Other current assets		2,339
Intangible assets		41,150
Other assets		1,144
Assets acquired		48,403
Liabilities assumed
Current liabilities assumed		(1,470)
Long-term liabilities assumed		(3,524)
Deferred tax liabilities, non-current		(3,005)
Total liabilities assumed		(7,999)
Net assets acquired		40,404
Total acquisition consideration		112,187
Goodwill		$ 71,783