Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue:
Product	$ 7,122	$ 6,825
Service	6,679	5,449
Total revenue	13,801	12,274
Cost of revenue:
Product	3,070	3,041
Service	3,585	2,971
Total cost of revenue	6,655	6,012
Gross profit	7,146	6,262
Operating expenses:
Research and development	2,359	724
Sales and marketing	7,441	4,565
General and administrative	3,867	3,912
Total operating expenses	13,667	9,201
Loss from operations	(6,521)	(2,939)
Other income (expense):
Interest expense, net	(15)	(35)
Foreign exchange gains (losses)	165	(145)
Other income (expense)	107	(2)
Loss before income taxes	(6,264)	(3,121)
Income tax expense	47	32
Net loss	$ (6,311)	$ (3,153)
Net loss per share attributable to ordinary shareholders—basic and diluted (in dollars per share)	$ (0.31)	$ (0.18)
Weighted-average shares used to compute net loss attributable to ordinary shareholders—basic and diluted (in shares)	20,331,411	17,264,135