Property and equipment (Tables)

12 Months Ended

Dec. 31, 2012

Property and equipment

Schedule of property and equipment

	December 31,
	2012			2011
Leasehold improvements	$	72,119		$	60,030
Construction in progress		6,295			7,059
Computer equipment		7,493			6,674
Software		7,519			5,818
Office equipment		411			400
Total property and equipment		93,837			79,981
Less: accumulated depreciation and amortization		(51,426	)		(40,264	)
Total property and equipment, net	$	42,411		$	39,717

Schedule of depreciation and amortization expense

	For the Years Ended December 31,
	2012		2011		2010
Network access	$	11,948	$	8,867	$	4,392
Network operations		2,844		2,444		1,747
Development and technology		1,049		873		1,024
General and administrative		117		117		348
Total depreciation and amortization of property and equipment	$	15,958	$	12,301	$	7,511