PROPERTY AND EQUIPMENT

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT

PROPERTY AND EQUIPMENT

Property and equipment consisted of the following at December 31, 2017 and 2016, respectively:

($ in thousands)	2017		2016
Equipment and vehicles	$	646,800	$	402,641
Leasehold improvements	4,987		4,500
Subtotal	651,787		407,141
Less accumulated depreciation	180,877		143,279
Property and equipment — net	$	470,910	$	263,862