Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net loss	$ (12,713)	$ (6,427)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	534	353
Stock-based compensation	1,624	616
Capital loss from disposal of fixed assets		5
Amortization of deferred charges related to long-term loan	31	131
Revaluation of fair value of warrants to convertible preferred stock		604
Changes in assets and liabilities:
Trade receivables	9,414	5,701
Prepaid expenses and other current assets	18	407
Trade payables	137	(619)
Accrued expenses and other liabilities	721	(60)
Increase in severance pay, net	339	18
Deferred revenues	(686)	(650)
Other long term liabilities	1	(52)
Net cash provided by (used in) operating activities	(580)	27
Cash flows from investing activities:
Decrease (increase) in short-term deposit	4,242	(1)
Decrease (increase) in long-term deposits	46	(17)
Decrease (increase) in restricted cash	260	(53)
Purchase of property and equipment	(1,288)	(629)
Net cash provided by (used in) investing activities	3,260	(700)
Cash flows from financing activities:
Exercise of employee stock options	30	48
Payment of deferred equity offering cost	(662)
Net proceeds from initial public offering	108,447
Net cash provided by financing activities	107,815	48
Increase (decrease) in cash and cash equivalents	110,495	(625)
Cash and cash equivalents at beginning of period	9,633	14,470
Cash and cash equivalents at end of period	120,128	13,845
Supplemental disclosure of non-cash flow information:
Conversion of preferred stock to common stock	43,775
Conversion of liability warrants to equity	2,866
Deferred offering costs not yet paid	519
Deferred charges related to warrants granted to credit facilitator		263
Supplemental non-cash items	47,160	263
Supplemental disclosures of cash flow information:
Cash paid for income taxes	$ 46	$ 140