Inventories - Narratives (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Inventory
Inventory write-down	$ 623	$ 12,261
Chemistry Technologies
Inventory
Inventory write-down	600	8,400
Data Analytics
Inventory
Inventory write-down	$ 0	$ 3,900