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Inventory (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Inventory Disclosure [Abstract]    
Schedule of Inventory
The inventory balance was as follows:
March 31,
2022		December 31,
2021
Raw materials$618 $414 
Work in process249 117 
Finished goods155 157 
Inventory, net$1,022 $688 
The inventory balance was as follows:
Successor
December 31,
2021		December 31,
2020
Raw materials$414 $330 
Work in process117 — 
Finished goods157 — 
Inventory, net$688 $330