The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Intangible Assets, net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	8 Months Ended	9 Months Ended	12 Months Ended
Intangible Assets, net (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020	Jun. 21, 2020	Sep. 30, 2020	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (9,238)				$ (9,238)	$ (2,800)
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Gross carrying amount	96,691				96,691	63,761
Accumulated amortization	(9,238)				(9,238)	(2,800)
Net carrying amount	87,453				87,453	60,961
Amortization expense	2,334	$ 1,130	$ 0	$ 1,508	6,427
Cosmos Tradename
Indefinite-lived Intangible Assets [Line Items]
Carrying amount	300				300	300
In-process research and development
Indefinite-lived Intangible Assets [Line Items]
Carrying amount	256				256	208
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	47,244				47,244	31,541
Accumulated amortization	(2,967)				(2,967)	(899)
Net carrying amount	44,277				$ 44,277	$ 30,642
Weighted average useful life in years					19 years	19 years
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated amortization	(2,967)				$ (2,967)	$ (899)
Technology
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	41,571				41,571	25,368
Accumulated amortization	(4,818)				(4,818)	(1,508)
Net carrying amount	36,753				$ 36,753	$ 23,860
Weighted average useful life in years					14 years	12 years
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated amortization	(4,818)				$ (4,818)	$ (1,508)
Trademark
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	6,572				6,572	6,344
Accumulated amortization	(1,270)				(1,270)	(393)
Net carrying amount	5,302				$ 5,302	$ 5,951
Weighted average useful life in years					7 years	9 years
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated amortization	(1,270)				$ (1,270)	$ (393)
Internal-use software licenses
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	748				748
Accumulated amortization	(183)				(183)
Net carrying amount	565				$ 565
Weighted average useful life in years					3 years
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Accumulated amortization	$ (183)				$ (183)