Property and Equipment

12 Months Ended

Dec. 31, 2014

Property and Equipment

(7) Property and Equipment

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

	December 31,
	2014			2013
Transportation equipment	$	48,906		$	48,917
Computer equipment and purchased software		72,602			66,713
Furniture and equipment		11,477			11,647
Leasehold improvements		28,500			29,116
Internally developed software		9,408			8,393
Property and equipment, gross		170,893			164,786
Less: accumulated depreciation and amortization		(93,041	)		(79,341	)
Property and equipment, net	$	77,852		$	85,445

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, 2014, the net asset value of the aircraft and aircraft-related equipment was $41.5 million, net of $7.1 million of accumulated depreciation. As of December 31, 2013, the net asset value of the aircraft and aircraft-related equipment was $43.0 million, net of $5.6 million of accumulated depreciation.

Included in computer equipment at December 31, 2014 and December 31, 2013 is $2.9 million and $2.9 million, respectively, acquired under capital lease arrangements. At December 31, 2014 and December 31, 2013, accumulated amortization relating to computer equipment under capital lease arrangements totaled $2.5 million and $1.7 million, respectively.

Depreciation and amortization expense related to property and equipment, including assets under capital leases, was $20.1 million, $21.0 million, and $17.7 million for the years ended December 31, 2014, 2013, and 2012, respectively.