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Note 5 - Property, Plant and Equipment (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

Estimated

        
  

Useful Lives

 

June 30,

 

December 31,

  

in Years

 

2021

 

2020

Land

  $31,148 $30,869

Land improvements

 8 - 15 7,624 7,620

Buildings and improvements

 13 - 39 118,864 121,105

Rental machinery and equipment

 2 - 7 906,067 897,398

Machinery and equipment - other

 7 55,282 54,842

Furniture, fixtures and computers

 3 - 5 19,809 16,928

Automobiles and other vehicles

 5 25,861 25,948

Leasehold improvements

 

7 - 15, or lease term if shorter

 12,652 12,773

Construction in progress - machinery and equipment

  11,866 24,381
     1,189,173 1,191,864

Less: Accumulated depreciation

    (944,716) (919,157)

Total property, plant and equipment, net

    $244,457 $272,707
Depreciation and Amortization Expense [Table Text Block]
  

Three Months Ended

 

Six Months Ended

  

June 30,

 

June 30,

  

2021

 

2020

 

2021

 

2020

Services

 $13,683 $15,771 $28,154 $33,034

Products

 126 184 265 423

General and administrative expenses

 1,523 1,297 3,020 3,513

Total

 $15,332 $17,252 $31,439 $36,970