Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Net revenue	$ 67,018	$ 56,078	$ 193,203	$ 160,487
Costs of revenue	31,339	27,093	92,200	78,944
Gross profit	$ 35,679	$ 28,985	$ 101,003	$ 81,543
Gross margin	53.00%	52.00%	52.00%	51.00%
Operating expenses:
Direct selling and marketing	$ 18,100	$ 16,970	$ 52,462	$ 47,383
Direct research and development	8,617	6,866	25,065	19,818
Indirect	13,953	9,052	37,248	29,068
Total operating expenses	40,670	32,888	114,775	96,269
Loss from operations	(4,991)	(3,903)	(13,772)	(14,726)
Software
Segment Reporting Information [Line Items]
Net revenue	44,222	36,709	128,130	103,227
Costs of revenue	18,534	14,815	52,473	42,872
Gross profit	$ 25,688	$ 21,894	$ 75,657	$ 60,355
Gross margin	58.00%	60.00%	59.00%	58.00%
Operating expenses:
Direct selling and marketing	$ 17,257	$ 16,075	$ 49,926	$ 44,729
Direct research and development	8,617	6,866	25,065	19,818
Indirect	13,146	7,943	34,872	25,673
Total operating expenses	39,020	30,884	109,863	90,220
Loss from operations	(13,332)	(8,990)	(34,206)	(29,865)
Network Connectivity
Segment Reporting Information [Line Items]
Net revenue	22,796	19,369	65,073	57,260
Costs of revenue	12,805	12,278	39,727	36,072
Gross profit	$ 9,991	$ 7,091	$ 25,346	$ 21,188
Gross margin	44.00%	37.00%	39.00%	37.00%
Operating expenses:
Direct selling and marketing	$ 843	$ 895	$ 2,536	$ 2,654
Indirect	807	1,109	2,376	3,395
Total operating expenses	1,650	2,004	4,912	6,049
Loss from operations	$ 8,341	$ 5,087	$ 20,434	$ 15,139