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Business Combinations - Narrative (Details) $ in Thousands	Oct. 01, 2020 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Intangible Assets [Line Items]
Goodwill		$ 499,065	$ 499,309
304B Link Business
Intangible Assets [Line Items]
Purchase price paid	$ 225,000
Goodwill	161,117
Goodwill expected to be deductible for tax purposes	$ 93,900
304B Link Business | Discount Rate
Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets	0.140
304B Link Business | Acquired Technology | Royalty Rate
Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets	0.100
304B Link Business | Trade Names | Royalty Rate
Intangible Assets [Line Items]
Measurement input used in estimating the fair values of intangible assets	0.005

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