Property and Equipment

12 Months Ended

Dec. 31, 2017

Property and Equipment

Property and Equipment

Note 7—Property and Equipment

The following is a summary of property and equipment at December 31 (in thousands):

	2017		2016		Useful Life
Land and buildings	$	82,755	$	56,878	Buildings 30 Years
Leasehold improvements		12,601		12,147	Lease Life
Office equipment		8,888		8,083	3 - 5 Years
Construction equipment		392,454		368,241	3 - 7 Years
Transportation equipment		101,855		98,113	3 - 18 Years
Construction in progress		16,336		2,321
		614,889		545,783
Less: accumulated depreciation and amortization		(303,112)		(268,437)
Property and equipment, net	$	311,777	$	277,346