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Segment Information (Tables)
3 Months Ended
Mar. 31, 2023
Segment Information  
Summary of revenue and other financial information by reportable segment

    

Contract

    

Aftermarket

    

(in thousands)

    

Operations

    

Services

    

Total

Three months ended March 31, 2023

 

  

 

  

 

  

Revenue

$

187,745

$

42,089

$

229,834

Gross margin

 

108,263

 

8,181

 

116,444

Three months ended March 31, 2022

 

  

 

  

 

  

Revenue

$

163,656

$

33,545

$

197,201

Gross margin

 

99,155

 

4,907

 

104,062

Reconciliation of total gross margin to income before taxes

    

Three Months Ended

March 31, 

(in thousands)

    

2023

    

2022

Total gross margin

$

116,444

$

104,062

Less:

 

  

 

  

Selling, general and administrative

 

26,425

 

27,773

Depreciation and amortization

 

40,181

 

43,039

Long-lived and other asset impairment

 

2,569

 

7,416

Restructuring charges

1,047

Interest expense

 

26,581

 

25,246

Gain on sale of assets, net

(3,605)

(2,112)

Other expense (income), net

 

603

 

36

Income before income taxes

$

22,643

$

2,664