Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Cash flows from operating activities
Net loss	$ (41,512)	$ (50,353)	$ (60,793)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	2,401	2,436	2,104
Provision for (recovery of) doubtful accounts	(14)	42	150
Amortization of debt discount	39	46	24
Issuances and changes in fair value of common stock warrants	0	0	1,584
Deferred income taxes	(63)	0	(84)
Stock-based compensation expense	8,388	3,451	2,726
Loss on disposal of fixed assets	0	10	39
Loss on lease abandonment	0	0	75
Changes in operating assets and liabilities
Accounts receivable	(4,493)	(5,090)	(9,671)
Prepaid expenses and other assets	841	(1,733)	(1,173)
Accounts payable	(1,400)	(996)	1,034
Accrued expenses and other liabilities	968	2,209	2,694
Deferred revenue	13,087	12,611	11,024
Net cash used in operating activities	(21,695)	(37,367)	(50,267)
Cash flows from investing activities
Purchase of property and equipment	(241)	(966)	(2,539)
Proceeds from the sale of property and equipment	0	0	4
Acquisitions, net of cash acquired	0	0	449
Net cash used in investing activities	(241)	(966)	(2,086)
Cash flows from financing activities
Proceeds from issuance of debt, net of issuance costs	2,648	4,000	6,500
Repayments of debt obligations	(4,489)	(5,382)	(6,961)
Proceeds from issuance of convertible preferred stock, net of issuance costs	0	0	59,874
Repurchases of unvested common stock	(18)	0	0
Proceeds from initial public offering, net of offering costs	(152)	77,092	0
Taxes remitted on RSU awards vested	(531)	0	0
Proceeds from exercise of stock options, net of taxes paid	1,162	434	456
Proceeds from Employee Stock Purchase Plan	2,057	0	0
Cash paid for fractional shares	0	(8)	0
Net cash provided by financing activities	677	76,136	59,869
Net increase (decrease) in cash and cash equivalents	(21,259)	37,803	7,516
Cash and cash equivalents
Beginning of period	89,562	51,759	44,243
End of period	68,303	89,562	51,759
Supplemental disclosures
Cash paid for interest	129	231	321
Cash paid for taxes, net of refunds	316	541	348
Non-cash investing and financing activities
Accrued purchases of property and equipment	2	16	15
Property and equipment acquired utilizing lease incentives	0	139	883
Deferred offering costs not yet paid	0	176	0
Convertible preferred stock [Member]
Non-cash investing and financing activities
Stock issued in connection with the InsightsOne acquisition	0	0	17,024
Restricted stock units [Member]
Non-cash investing and financing activities
Stock issued in connection with the InsightsOne acquisition	$ 0	$ 0	$ 31