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Note 2 - Details of Consolidated Balance Sheet Accounts (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

(In thousands)

 

2023

   

2022

 

Parts and tires inventory

  $ 6,286     $ 5,427  

License fees

    5,557       6,029  

Tires in service

    4,984       5,330  

Insurance premiums

    4,608       4,054  

Contract assets

    2,106       2,746  

Other

    3,971       3,734  
    $ 27,512     $ 27,320  
Schedule of Accrued Liabilities [Table Text Block]

(In thousands)

 

2023

   

2022

 

Accrued expenses

  $ 10,575     $ 14,426  

Vacation

    9,612       9,776  

Salaries and wages

    3,800       14,750  

Other

    2,722       2,312  
    $ 26,709     $ 41,264