Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Condensed Consolidated Statements of Operations
Revenue	$ 49,033	$ 39,075	$ 93,366	$ 73,574
Costs and operating expenses:
Network access	21,105	16,915	40,512	31,593
Network operations	11,668	10,418	22,931	20,868
Development and technology	6,663	5,267	12,997	10,620
Selling and marketing	5,094	4,882	9,987	9,550
General and administrative	11,263	7,700	19,366	15,852
Amortization of intangible assets	910	862	1,821	1,727
Total costs and operating expenses	56,703	46,044	107,614	90,210
Loss from operations	(7,670)	(6,969)	(14,248)	(16,636)
Interest and other expense, net	(46)	(152)	(42)	(182)
Loss before income taxes	(7,716)	(7,121)	(14,290)	(16,818)
Income tax expense	141	124	340	362
Net loss	(7,857)	(7,245)	(14,630)	(17,180)
Net income attributable to non-controlling interests	160	21	267	70
Net loss attributable to common stockholders	$ (8,017)	$ (7,266)	$ (14,897)	$ (17,250)
Net loss per share attributable to common stockholders:
Basic (in dollars per share)	$ (0.20)	$ (0.19)	$ (0.38)	$ (0.46)
Diluted (in dollars per share)	$ (0.20)	$ (0.19)	$ (0.38)	$ (0.46)
Weighted average shares used in computing net loss per share attributable to common stockholders:
Basic (in shares)	39,286	37,944	38,997	37,749
Diluted (in shares)	39,286	37,944	38,997	37,749