Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Condensed Consolidated Statements of Operations
Revenue	$ 28,396	$ 26,239	$ 54,848	$ 49,373
Costs and operating expenses:
Network access	13,247	11,035	26,172	20,705
Network operations	5,793	4,753	11,617	8,704
Development and technology	3,169	2,726	6,840	5,862
Selling and marketing	3,966	3,822	7,851	6,812
General and administrative	4,645	3,811	9,040	8,301
Amortization of intangible assets	928	516	1,853	915
Total costs and operating expenses	31,748	26,663	63,373	51,299
Loss from operations	(3,352)	(424)	(8,525)	(1,926)
Interest and other (expense) income, net	(18)	25	1	72
Loss before income taxes	(3,370)	(399)	(8,524)	(1,854)
Income tax expense (benefit)	155	(173)	303	(640)
Net loss	(3,525)	(226)	(8,827)	(1,214)
Net income attributable to non-controlling interests	209	173	355	306
Net loss attributable to common stockholders	$ (3,734)	$ (399)	$ (9,182)	$ (1,520)
Net loss per share attributable to common stockholders:
Basic (in dollars per share)	$ (0.10)	$ (0.01)	$ (0.26)	$ (0.04)
Diluted (in dollars per share)	$ (0.10)	$ (0.01)	$ (0.26)	$ (0.04)
Weighted average shares used in computing net loss per share attributable to common stockholders:
Basic (in shares)	35,621	35,670	35,486	35,634
Diluted (in shares)	35,621	35,670	35,486	35,634