Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Condensed Consolidated Statements of Operations
Revenue	$ 29,392	$ 26,452
Costs and operating expenses:
Network access	13,623	12,925
Network operations	8,039	5,824
Development and technology	4,191	3,671
Selling and marketing	4,416	3,885
General and administrative	5,833	4,395
Amortization of intangible assets	893	925
Total costs and operating expenses	36,995	31,625
Loss from operations	(7,603)	(5,173)
Interest and other (expense) income, net	(20)	19
Loss before income taxes	(7,623)	(5,154)
Income tax expense	204	148
Net loss	(7,827)	(5,302)
Net income attributable to non-controlling interests	55	146
Net loss attributable to common stockholders	$ (7,882)	$ (5,448)
Net loss per share attributable to common stockholders:
Basic (in dollars per share)	$ (0.22)	$ (0.15)
Diluted (in dollars per share)	$ (0.22)	$ (0.15)
Weighted average shares used in computing net loss per share attributable to common stockholders:
Basic (in shares)	36,390	35,350
Diluted (in shares)	36,390	35,350