Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (130,829)	$ (4,640)
Loss from discontinued operations	349	807
Loss from continuing operations	(130,480)	(3,833)
Adjustments to reconcile net loss from continuing operations to net cash used in continuing operating activities:
Depreciation and amortization	432
Stock based compensation expense	16,627	2,042
Research and development - intellectual property acquired	104,693
Change in fair value of derivatives	(109)	(248)
Offering costs expensed		21
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(190)	54
Accounts payable and accrued expenses	1,411	85
Net cash used in continuing operating activities	(7,616)	(1,879)
Net cash provided by discontinued operating activities	33	113
Net cash used in operating activities	(7,583)	(1,766)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(2,544)
Net cash used in continuing investing activities	(2,544)
Net cash provided by discontinued investing activities	25
Net cash used in investing activities	(2,519)
CASH FLOWS FROM FINANCING ACTIVITIES
Special cash dividend		(10,000)
Proceeds from stock options exercised	1,301	129
Net proceeds from the sale of preferred stock and warrants	17,667
Net proceeds from the sale of common stock and warrants		1,406
Proceeds from the sale of common stock	2,278
Payments to Zift		(299)
Net cash provided by (used in) financing activities	21,246	(8,764)
Net increase (decrease) in cash and cash equivalents	11,144	(10,530)
Cash and cash equivalents - beginning of period	6,523	17,053
Cash and cash equivalents - end of period	17,667	6,523
Supplemental schedule of non-cash investing and financing activities:
Conversion of Series A preferred stock to common stock	976	401
Conversion of Series B preferred stock to common stock	549
Conversion of Series C preferred stock to common stock	1,809
Conversion of Series D preferred stock to common stock	1,517	140
Warrants exchanged for common stock shares	78
Establishment of warrant liability in connection with Series F Preferred Stock issuance	4,299
Establishment of derivative liability in connection with Series F Preferred Stock issuance	9,319
Deemed dividend - accretion of discount on Series F preferred stock	369
Common stock shares and warrants issued for offering costs		75
Unpaid liability for acquisition of property and equipment	54
Cumulative dividends on Series F preferred stock	$ 124