Segment Information - Financial Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Revenue from related parties	$ 97,522	$ 132,565	$ 205,183	$ 262,762
Cost of revenue	30,888	45,049	73,984	94,616
Sales and marketing	26,724	59,983	61,194	118,115
Amortization of purchased intangible assets	876	923	1,750	1,822
Gain on divestiture	0	0	(17,591)	0
Unallocated corporate expenses	33,396	96,859	112,877	182,643
Income (loss) from operations	5,638	(70,249)	(27,031)	(134,434)
Hosted Services - Business
Segment Reporting Information [Line Items]
Revenue from related parties	81,286	103,985	168,624	219,431
Hosted Services - Consumer | Kasamba, Inc.
Segment Reporting Information [Line Items]
Revenue from related parties		9,100	7,200	18,300
Professional Services
Segment Reporting Information [Line Items]
Revenue from related parties	$ 16,236	$ 28,580	$ 36,559	$ 43,331