UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Direct costs of network, sales and services, exclusive of depreciation and amortization, shown below:
Direct costs of customer support	$ 9,114	$ 7,528	$ 27,594	$ 22,052
Direct costs of amortization of acquired technologies	1,524	1,273	4,535	3,643
Sales and marketing	8,858	8,048	28,938	23,609
General and administrative	11,611	8,740	34,439	27,979
Depreciation and amortization	19,391	12,264	54,773	34,075
Loss on disposal of property and equipment, net		4	32	4
Exit activities, restructuring and impairments	56	274	3,001	1,206
Total operating costs and expenses	87,702	70,926	262,782	210,887
Loss from operations	(3,035)	(1,354)	(12,086)	(1,632)
Non-operating expenses:
Interest expense	6,699	2,429	19,996	7,324
Other, net	(149)	67	335	679
Total non-operating expenses	6,550	2,496	20,331	8,003
Loss before income taxes and equity in (earnings) of equity-method investment	(9,585)	(3,850)	(32,417)	(9,635)
Benefit (provision) for income taxes	128	(254)	982	98
Equity in (earnings) of equity-method investment, net of taxes	(80)	(69)	(198)	(157)
Net loss	(9,377)	(4,035)	(31,237)	(9,380)
Other comprehensive income (loss):
Foreign currency translation adjustment, net of taxes	(264)	429	(94)	(477)
Unrealized gain (loss) on interest rate swap, net of taxes	341	(150)	61	(204)
Total other comprehensive income (loss)	77	279	(33)	(681)
Comprehensive loss	(9,300)	(3,756)	(31,270)	(10,061)
Basic and diluted net loss per share (in dollars per share)	$ (0.18)	$ (0.08)	$ (0.61)	$ (0.18)
Weighted average shares outstanding used in computing basic and diluted net loss per share (in shares):	51,063	50,882	51,180	51,070
Operating segments
Revenues:
Total revenues	84,667	69,572	250,696	209,255
Direct costs of network, sales and services, exclusive of depreciation and amortization, shown below:
Direct costs of network, sales and services, exclusive of depreciation and amortization	37,148	32,795	109,470	98,319
Operating segments | Data center services
Revenues:
Total revenues	61,640	45,488	181,318	135,461
Direct costs of network, sales and services, exclusive of depreciation and amortization, shown below:
Direct costs of network, sales and services, exclusive of depreciation and amortization	27,716	23,171	80,170	68,461
Operating segments | IP services
Revenues:
Total revenues	23,027	24,084	69,378	73,794
Direct costs of network, sales and services, exclusive of depreciation and amortization, shown below:
Direct costs of network, sales and services, exclusive of depreciation and amortization	$ 9,432	$ 9,624	$ 29,300	$ 29,858