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Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Dash acquisition and other intangibles:
Accumulated Amortization	$ (26,147)	$ (12,261)
Finite-lived intangible assets, net	219,802
Gross Amount	246,713	260,316
Net Carrying Value	220,566	248,055
Dash
Dash acquisition and other intangibles:
Accumulated Amortization	(9,434)	(9,044)
Gross Amount	15,093	15,093
Net Carrying Value	5,659	6,049
Dash | Licenses
Dash acquisition and other intangibles:
Licenses, indefinite lived	764	764
Dash | Customer relationships
Dash acquisition and other intangibles:
Finite-lived intangible assets, gross	10,396	10,396
Accumulated Amortization	(5,501)	(5,111)
Finite-lived intangible assets, net	$ 4,895	$ 5,285
Amortization Period	20 years	20 years
Dash | Other, definite lived
Dash acquisition and other intangibles:
Finite-lived intangible assets, gross	$ 3,933	$ 3,933
Accumulated Amortization	(3,933)	(3,933)
Finite-lived intangible assets, net	$ 0	$ 0
Dash | Other, definite lived | Minimum
Dash acquisition and other intangibles:
Amortization Period	2 years	2 years
Dash | Other, definite lived | Maximum
Dash acquisition and other intangibles:
Amortization Period	7 years	7 years
Voxbone S.A
Dash acquisition and other intangibles:
Accumulated Amortization	$ (16,713)	$ (3,217)
Gross Amount	231,620	245,223
Net Carrying Value	214,907	242,006
Voxbone S.A | Customer relationships
Dash acquisition and other intangibles:
Finite-lived intangible assets, gross	147,874	156,559
Accumulated Amortization	(9,037)	(1,739)
Finite-lived intangible assets, net	$ 138,837	$ 154,820
Amortization Period	15 years	15 years
Voxbone S.A | Developed technology
Dash acquisition and other intangibles:
Finite-lived intangible assets, gross	$ 83,746	$ 88,664
Accumulated Amortization	(7,676)	(1,478)
Finite-lived intangible assets, net	$ 76,070	$ 87,186
Amortization Period	10 years	10 years

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