Property and equipment (Tables)

9 Months Ended

Sep. 30, 2012

	September 30, 2012			December 31, 2011

Leasehold improvements	$	75,671		$	60,030
Construction in progress	7,264			7,059
Computer equipment	7,347			6,674
Software	7,213			5,818
Office equipment	411			400
Total property and equipment	97,906			79,981
Less: accumulated depreciation and amortization	(51,936		)	(40,264		)
Total property and equipment, net	$	45,971		$	39,717

Schedule of depreciation and amortization expense

Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011

Network access	$	2,704	$	2,637	$	8,848	$	6,295
Network operations	687		664		2,077		1,842
Development and technology	375		234		656		674
General and administrative	32		20		91		83
Total depreciation and amortization of property and equipment	$	3,798	$	3,555	$	11,672	$	8,894

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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