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Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2019
Property and Equipment  
Schedule of property and equipment

Property and equipment consisted of the following at December 31:

 

 

 

 

 

 

 

 

 

 

 

 

    

Estimated

    

 

 

    

 

 

 

 

Useful Life

 

 

 

 

 

 

(dollars in thousands)

 

in Years

 

2019

 

2018

Land

 

 

 —

 

$

9,301

 

$

8,475

Buildings and improvements

 

 

3 to 39

 

 

29,747

 

 

23,228

Construction equipment

 

 

3 to 12

 

 

403,217

 

 

371,941

Office equipment

 

 

3 to 10

 

 

15,944

 

 

11,743

 

 

 

 

 

 

458,209

 

 

415,387

Less: accumulated depreciation and amortization

 

 

 

 

 

(272,865)

 

 

(253,495)

 

 

 

 

 

$

185,344

 

$

161,892