Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Product	$ 6,613	$ 5,887	$ 13,735	$ 12,712
Service	7,639	5,901	14,318	11,350
Total revenue	14,252	11,788	28,053	24,062
Cost of revenue:
Product	2,885	2,822	5,955	5,863
Service	3,617	3,171	7,202	6,142
Total cost of revenue	6,502	5,993	13,157	12,005
Gross profit	7,750	5,795	14,896	12,057
Operating expenses:
Research and development	2,846	1,515	5,205	2,239
Sales and marketing	7,727	6,343	15,168	10,908
General and administrative	3,784	3,968	7,651	7,880
Total operating expenses	14,357	11,826	28,024	21,027
Loss from operations	(6,607)	(6,031)	(13,128)	(8,970)
Other income (expense):
Interest expense, net	(19)	(28)	(34)	(63)
Foreign exchange losses	(674)	(262)	(509)	(407)
Other income	7	81	114	79
Loss before income taxes	(7,293)	(6,240)	(13,557)	(9,361)
Income tax expense (benefit)	1	(6)	48	26
Net loss	$ (7,294)	$ (6,234)	$ (13,605)	$ (9,387)
Net loss per share attributable to ordinary shareholders—basic and diluted (in dollars per share)	$ (0.33)	$ (0.36)	$ (0.64)	$ (0.54)
Weighted-average shares used to compute net loss attributable to ordinary shareholders—basic and diluted (in shares)	22,245,682	17,292,251	21,293,835	17,284,330