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Property and Equipment
 12 Months Ended
Dec. 31, 2016
Property and Equipment  
Property and Equipment

7. Property and Equipment

Property and equipment consist of the following (dollars in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

Estimated

 

 

 

 

 

 

 

 

    

Useful Lives

    

December 31,

 

 

    

in Years

    

2016

    

2015

 

Land

 

 —

 

$
2,745

 

$
2,745

 

Transportation equipment

 

1 - 7

 

 
74,137

 

 
64,951

 

Machinery and equipment

 

1 - 20

 

 
27,843

 

 
25,118

 

Computer and telephone equipment

 

1 - 10

 

 
20,791

 

 
21,141

 

Buildings and leasehold improvements

 

1 - 40

 

 
35,166

 

 
30,319

 

Furniture and fixtures

 

1 - 17

 

 
4,224

 

 
4,181

 

Construction in progress

 

 —

 

 
425

 

 

 —

 

 

 

 

 

 
165,331

 

 
148,455

 

Less—Accumulated depreciation

 

 

 

 
(97,136)

 

 
(87,642)

 

Property and equipment, net

 

 

 

$
68,195

 

$
60,813

 

 

Depreciation expense, including capital lease amortization, for the years ended December 31, 2016,  2015 and 2014 was $18.0 million, $15.9 million and $13.7 million, respectively.