Quarterly report [Sections 13 or 15(d)]

Property, Plant and Equipment, net

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Property, Plant and Equipment, net
 3 Months Ended
Mar. 31, 2026
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, net Property, Plant and Equipment, net     
Property, plant and equipment, net includes the following (in thousands):
March 31, December 31,
Useful Life 2026 2025
Aviation equipment(a)
3-10 years
 $ 59,548  $ 43,498 
Machinery and equipment
7-20 years
 53,657  53,774 
Buildings and leasehold improvements
15-39 years
 29,806  30,100 
Drilling rigs and directional drilling equipment
3-15 years
 13,085  13,062 
Vehicles, trucks and trailers
5-10 years
 13,061  13,044 
Rail improvements
10-20 years
 11,759  11,759 
Land N/A 6,025  6,025 
Other property, plant and equipment
3-15 years
 6,685  6,721 
193,626  177,983 
Equipment not yet placed in service 19,893  25,970 
213,519  203,953 
Less: Accumulated depreciation(b)
100,291  97,856 
Total property, plant and equipment, net $ 113,228  $ 106,097 
(a)    This equipment relates to assets leased and available to be leased to customers under operating leases.
(b)    Includes accumulated depreciation of $8.1 million and $5.7 million at March 31, 2026 and December 31, 2025, respectively, related to assets under operating leases.

Depreciation, depletion, amortization and accretion
A summary of depreciation, depletion, amortization and accretion is below (in thousands):
Three Months Ended March 31,
2026 2025
Depreciation $ 3,432  $ 2,036 
Amortization 14  14 
Depletion and accretion 24  33 
Depreciation, depletion, amortization and accretion $ 3,470  $ 2,083