7. Property and equipment

The following is a summary of property and equipment, at cost less accumulated depreciation and amortization:

	December 31,
	2014			2013
Leasehold improvements	$	152,627		$	97,462
Construction in progress		20,104			18,157
Computer equipment		7,909			7,372
Software		17,827			10,452
Office equipment		297			412

Total property and equipment		198,764			133,855
Less: accumulated depreciation and amortization		(86,992	)		(66,295	)

Total property and equipment, net	$	111,772		$	67,560

Included in property and equipment at December 31, 2014 and 2013 was equipment acquired under capital leases totaling $1,209 and $1,220, respectively, and related accumulated depreciation and amortization of $300 and $191, respectively.

Depreciation and amortization expense, which includes depreciation and amortization for property and equipment under capital leases, is allocated as follows on the accompanying consolidated statements of operations:

	For the Years Ended December 31,
	2014		2013		2012
Network access	$	18,074	$	12,651	$	11,948
Network operations		5,662		4,091		2,844
Development and technology		3,381		1,992		1,049
General and administrative		329		206		117

Total depreciation and amortization of property and equipment	$	27,446	$	18,940	$	15,958

During the year ended December 31, 2014, the Company recognized $406 of impairment losses related to a change in the use of certain software developed for internal use that indicated that the carrying value of those assets will not be recoverable, and $494 of net impairment losses related to a venue termination agreement that resulted in the abandonment of our Wi-Fi network assets and the release of the corresponding capital lease obligations associated with those assets. The impairment charges for internal use software and abandoned Wi-Fi network assets are included within development and technology expenses and general and administrative expenses, respectively, in the accompanying consolidated statements of operations.