Property and Equipment

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

(7) Property and Equipment

Property and equipment (in thousands) consisted of the following, as of:

	December 31,
	2016			2015
Transportation equipment	$	48,835		$	48,879
Computer equipment and purchased software		60,692			64,615
Furniture and equipment		10,871			11,649
Leasehold improvements		27,737			28,211
Internally developed software		9,655			9,560
Property and equipment, gross		157,790			162,914
Less: accumulated depreciation and amortization		(100,354	)		(97,250	)
Property and equipment, net	$	57,436		$	65,664

Included in transportation equipment is the Company’s owned corporate aircraft, including capitalizable costs related to the repairs to the aircraft, and aircraft-related equipment. As of December 31, 2016, the net asset value of the aircraft and aircraft-related equipment was $38.4 million, net of $10.2 million of accumulated depreciation. As of December 31, 2015, the net asset value of the aircraft and aircraft-related equipment was $40.0 million, net of $8.6 million of accumulated depreciation.

Included in computer equipment at December 31, 2016 and 2015 is $2.2 million and $2.4 million, respectively, acquired under capital lease arrangements. At December 31, 2016 and 2015, accumulated amortization relating to computer equipment under capital lease arrangements totaled $2.2 million and $2.3 million, respectively.

Depreciation and amortization expense related to property and equipment, including assets under capital leases, was $10.6 million, $14.0 million, and $20.1 million for the years ended December 31, 2016, 2015, and 2014, respectively.