Property and Equipment

12 Months Ended

Dec. 31, 2017

Property Plant And Equipment [Abstract]

Property and Equipment

NOTE 9. Property and Equipment

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

	December 31,
	2017			2016
Land	$	24,708		$	24,708
Building and improvements		36,459			36,269
Leasehold improvements		6,372			5,016
Computer equipment and software		109,336			91,302
Furniture and equipment		14,555			13,852
Transportation equipment		620,951			472,634
Construction in process		1,460			450
		813,841			644,231
Less:  Accumulated depreciation and amortization		(251,691	)		(205,637	)
Property and Equipment, net	$	562,150		$	438,594

The increase in transportation equipment to $621.0 million in 2017 from $472.6 million in 2016 was due primarily to the purchase of containers and assets related to the acquisition of HGD comprised primarily of trailers and tractors.

The increase in computer software and hardware to $109.3 million in 2017 from $91.3 million in 2016 was related to our transportation management system.

Included in the transportation equipment is a capital lease obligation entered into for $26.4 million in 2011. The balances as of December 31, 2017 and 2016, net of accumulated amortization, were $10.0 million and $12.3 million, respectively.

Depreciation and amortization expense related to property and equipment was $58.1 million, $43.4 million and $35.9 million for 2017, 2016 and 2015, respectively, which includes amortization expense associated with a capital lease of $2.2 million for 2017, $2.3 million for 2016 and $2.6 million for 2015. This amortization expense is included in transportation costs. Transportation equipment depreciation is included in transportation costs.