Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Net revenue	$ 53,071	$ 41,111	$ 104,409	$ 78,165
Costs of revenue	26,343	21,088	51,851	40,161
Gross profit	$ 26,728	$ 20,023	$ 52,558	$ 38,004
Gross margin	50.00%	49.00%	50.00%	49.00%
Operating expenses:
Direct selling and marketing	$ 15,604	$ 12,434	$ 30,413	$ 22,004
Direct research and development	6,659	5,149	12,952	8,623
Indirect	9,912	8,317	20,016	14,697
Total operating expenses	32,175	25,900	63,381	45,324
Loss from operations	(5,447)	(5,877)	(10,823)	(7,320)
Software Segment
Segment Reporting Information [Line Items]
Net revenue	34,052	24,198	66,518	44,207
Costs of revenue	14,360	10,233	28,057	18,468
Gross profit	$ 19,692	$ 13,965	$ 38,461	$ 25,739
Gross margin	58.00%	58.00%	58.00%	58.00%
Operating expenses:
Direct selling and marketing	$ 14,668	$ 11,501	$ 28,654	$ 20,315
Direct research and development	6,659	5,149	12,952	8,623
Indirect	8,695	7,299	17,730	12,774
Total operating expenses	30,022	23,949	59,336	41,712
Loss from operations	(10,330)	(9,984)	(20,875)	(15,973)
Network Connectivity
Segment Reporting Information [Line Items]
Net revenue	19,019	16,913	37,891	33,958
Costs of revenue	11,983	10,855	23,794	21,693
Gross profit	$ 7,036	$ 6,058	$ 14,097	$ 12,265
Gross margin	37.00%	36.00%	37.00%	36.00%
Operating expenses:
Direct selling and marketing	$ 936	$ 933	$ 1,759	$ 1,689
Indirect	1,217	1,018	2,286	1,923
Total operating expenses	2,153	1,951	4,045	3,612
Loss from operations	$ 4,883	$ 4,107	$ 10,052	$ 8,653