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Inventory
9 Months Ended
Sep. 30, 2023
Inventory  
Inventory

3. Inventory

Inventory is comprised of the following:

September 30, 

December 31, 

(in thousands)

2023

2022

Parts and supplies

$

72,933

$

70,228

Work in progress

 

15,009

 

14,394

Inventory

$

87,942

$

84,622