CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Direct costs of network, sales and services, exclusive of depreciation and amortization, shown below:
Direct costs of customer support	$ 29,687	$ 26,664	$ 21,278
Direct costs of amortization of acquired technologies	4,967	4,718	3,500
Sales and marketing	31,800	31,343	29,715
General and administrative	42,759	38,635	33,952
Depreciation and amortization	48,181	36,147	36,926
Loss (gain) on disposal of property and equipment, net	9	(55)	37
Exit activities, restructuring and impairments	1,414	1,422	2,833
Total operating costs and expenses	290,829	269,828	248,551
(Loss) income from operations	(7,487)	3,764	(3,923)
Non-operating expenses:
Interest expense	11,346	7,566	3,701
Loss on extinguishment of debt	881
Other, net	614	283	165
Total non-operating expenses	12,841	7,849	3,866
Loss before income taxes and equity in (earnings) of equity-method investment	(20,328)	(4,085)	(7,789)
(Benefit) provision for income taxes	(285)	453	(5,612)
Equity in (earnings) of equity-method investment, net of taxes	(213)	(220)	(475)
Net loss	(19,830)	(4,318)	(1,702)
Other comprehensive (loss) income:
Foreign currency translation adjustment	(464)	84	136
Unrealized loss on interest rate swap	(777)
Total other comprehensive (loss) income	(1,241)	84	136
Comprehensive loss	(21,071)	(4,234)	(1,566)
Basic and diluted net loss per share (in dollars per share)	$ (0.39)	$ (0.09)	$ (0.03)
Weighted average shares outstanding used in computing basic and diluted net loss per share (in shares)	51,135	50,761	50,422
Operating Segments
Revenues:
Total revenues	283,342	273,592	244,628
Direct costs of network, sales and services, exclusive of depreciation and amortization, shown below:
Direct operating costs	132,012	130,954	120,310
Operating Segments | Data center services
Revenues:
Total revenues	185,147	167,286	133,453
Direct costs of network, sales and services, exclusive of depreciation and amortization, shown below:
Direct operating costs	92,564	90,604	78,907
Operating Segments | IP services
Revenues:
Total revenues	98,195	106,306	111,175
Direct costs of network, sales and services, exclusive of depreciation and amortization, shown below:
Direct operating costs	$ 39,448	$ 40,350	$ 41,403