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Inventory
3 Months Ended
Mar. 31, 2023
Inventory  
Inventory

2. Inventory

Inventory is comprised of the following:

March 31, 

December 31, 

(in thousands)

2023

2022

Parts and supplies

$

73,573

$

70,228

Work in progress

 

16,059

 

14,394

Inventory

$

89,632

$

84,622