Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Condensed Consolidated Statements of Operations
Revenue	$ 59,601	$ 49,033	$ 117,760	$ 93,366
Costs and operating expenses:
Network access	24,088	21,105	50,653	40,512
Network operations	12,723	11,668	25,569	22,931
Development and technology	7,463	6,663	14,888	12,997
Selling and marketing	5,353	5,094	10,816	9,987
General and administrative	6,730	11,263	14,429	19,366
Amortization of intangible assets	668	910	1,395	1,821
Total costs and operating expenses	57,025	56,703	117,750	107,614
Income (loss) from operations	2,576	(7,670)	10	(14,248)
Interest and other expense, net	(50)	(46)	(129)	(42)
Income (loss) before income taxes	2,526	(7,716)	(119)	(14,290)
Income tax expense	16	141	144	340
Net income (loss)	2,510	(7,857)	(263)	(14,630)
Net income attributable to non-controlling interests	395	160	851	267
Net income (loss) attributable to common stockholders	$ 2,115	$ (8,017)	$ (1,114)	$ (14,897)
Net income (loss) per share attributable to common stockholders:
Basic (in dollars per share)	$ 0.05	$ (0.20)	$ (0.03)	$ (0.38)
Diluted (in dollars per share)	$ 0.05	$ (0.20)	$ (0.03)	$ (0.38)
Weighted average shares used in computing net income (loss) per share attributable to common stockholders:
Basic (in shares)	41,961	39,286	41,645	38,997
Diluted (in shares)	45,219	39,286	41,645	38,997