Fair Value Measurements - Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Recurring
Liabilities
Financial guarantee contracts deferred premium	$ 2,900	$ 11,200
Level 1
Assets
Fair value of derivatives	0	0
Contingent consideration arrangements	0	0
Liabilities
Fair value of derivatives	0	0
Contingent consideration arrangements	0	0
Total net assets (liabilities)	0	0
Level 1 \| Warrant liability
Liabilities
September 2020 Warrants		0
Level 2
Assets
Fair value of derivatives	1,798	921
Contingent consideration arrangements	20,833	1,816
Liabilities
Fair value of derivatives	(172,386)	(97,060)
Contingent consideration arrangements	(25,000)	(8,618)
Total net assets (liabilities)	(174,755)	(102,941)
Level 2 \| Warrant liability
Liabilities
September 2020 Warrants		0
Level 3
Assets
Fair value of derivatives	0	0
Contingent consideration arrangements	0	0
Liabilities
Fair value of derivatives	0	0
Contingent consideration arrangements	0	0
Total net assets (liabilities)	0	(79,428)
Level 3 \| Warrant liability
Liabilities
September 2020 Warrants	$ 0	$ (79,428)	$ 0

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Amount of asset recognized arising from contingent consideration in a business combination.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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