Goodwill - Summary of Changes in Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Beginning balance		$ 1,165	$ 23,344
Measurement period adjustments			(12,848)
Acquisitions		100,455
Effect of change in foreign currency exchange rates		(19)	(8)
Impairment loss	$ (5,600)	(5,610)	(9,323)
Restatement adjustments		16,171
Disposal of Grapevine		(704)
Ending balance	111,458	111,458	$ 1,165
Timios Reporting Unit
Goodwill [Roll Forward]
Amount exceeding fair value	19,500	$ 19,500
Trade name
Goodwill [Roll Forward]
Impairment loss	(700)
Lender relationships
Goodwill [Roll Forward]
Impairment loss	$ (13,200)

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of fair value of reporting unit in excess of carrying amount.

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