Goodwill - Goodwill from the acquisition (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020
Goodwill
Goodwill, Beginning balance		$ 8,092	$ 0
Acquisition goodwill recognized			17,522
Measurement period adjustment	$ 2,300		2,276
Goodwill impairment recognized		(8,092)	(11,706)
Goodwill, Ending balance		$ 0	$ 8,092

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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- Definition

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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- Definition

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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- Definition

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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- Definition

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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