Estimated

    

 

 

    

 

 

 

(in thousands of dollars)

 

useful lives

 

2015

 

2016

 

Land and improvements

 
15

-

40

 years

 

$
15,904

 

$
12,380

 

Buildings and improvements

 
5

-

40

 years

 

 
69,645

 

 
70,724

 

Equipment and vehicles

 
3

-

20

 years

 

 
239,759

 

 
267,893

 

Dies and molds

 
3

-

20

 years

 

 
85,880

 

 
86,941

 

Construction in progress

 

 

 

 —

 

 

 
18,271

 

 
25,749

 

 

 

 

 

 

 

 

 
429,459

 

 
463,687

 

Less accumulated depreciation

 

 

 

 

 

 

 
(243,741)

 

 
(256,895)

 

Net property, plant and equipment

 

 

 

 

 

 

$
185,718

 

$
206,792