Subsequent Events	9 Months Ended
Jul. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	18. SUBSEQUENT EVENTS Changes in Board of Directors and Officers On August 7, 2018, Edward Swanson resigned from the position of director of the Company, and the Board of Directors of the Company (the “Board”) elected Rainer Erdtmann a director of the Company to fill the Class III director vacancy left by the resignation of Dr. Swanson. The Board determined that Mr. Erdtmann is “independent” pursuant to the definition of independence under Rule 5605(a)(2) of the Nasdaq Listing Rules. In consideration of Mr. Erdtmann’s agreement to join the Board the Company issued to Mr. Erdtmann an option to purchase 50,000 shares of the Company’s common stock exercisable over a term of 10 years and vests in 24 equal monthly installments commencing September 7, 2018, subject to continued service on the Board. The option was issued under the Company’s 2017 Equity Incentive Plan (the “Plan”), and the exercise price is $20.47 per share, which is fair value determined under the Plan. Mr. Erdtmann will also be entitled to participate in the annual compensation package the Company provides to its non-employee directors. On August 7, 2018, pursuant to Article II, Section 1.B of the Company’s Bylaws the Board approved an increase in the number of persons comprising the Board from seven to eight by adding one new director position to Class II of the Board, and the Board elected David Seaburg a director of the Company to fill the vacancy in Class II of the Board. The Company entered into a consulting agreement with Mr. Seaburg pursuant to which he will provide investor relations and other services to the Company over a period of two years for a fee consisting of (a) quarter-annual cash payment of $10,000, (b) 60,000 restricted stock units issued under the Plan that vest in four equal installments every six months during the term of the agreement subject to continued service, and (c) an annual award under the Plan of options exercisable over a term of 10 years to purchase common stock with a value of $150,000 at the time of the award based on a Black-Scholes calculation. John Stetson was an executive officer Company serving as the Chief Investment Officer. On September 7, 2018, the employment of John Stetson in any capacity with the Company, including as Chief Investment Officer, was terminated.

Subsequent Events

9 Months Ended

Jul. 31, 2018

18. SUBSEQUENT EVENTS

Changes in Board of Directors and Officers

On August 7, 2018, Edward Swanson resigned from the position of director of the Company, and the Board of Directors of the Company (the “Board”) elected Rainer Erdtmann a director of the Company to fill the Class III director vacancy left by the resignation of Dr. Swanson. The Board determined that Mr. Erdtmann is “independent” pursuant to the definition of independence under Rule 5605(a)(2) of the Nasdaq Listing Rules. In consideration of Mr. Erdtmann’s agreement to join the Board the Company issued to Mr. Erdtmann an option to purchase 50,000 shares of the Company’s common stock exercisable over a term of 10 years and vests in 24 equal monthly installments commencing September 7, 2018, subject to continued service on the Board. The option was issued under the Company’s 2017 Equity Incentive Plan (the “Plan”), and the exercise price is $20.47 per share, which is fair value determined under the Plan. Mr. Erdtmann will also be entitled to participate in the annual compensation package the Company provides to its non-employee directors.

On August 7, 2018, pursuant to Article II, Section 1.B of the Company’s Bylaws the Board approved an increase in the number of persons comprising the Board from seven to eight by adding one new director position to Class II of the Board, and the Board elected David Seaburg a director of the Company to fill the vacancy in Class II of the Board. The Company entered into a consulting agreement with Mr. Seaburg pursuant to which he will provide investor relations and other services to the Company over a period of two years for a fee consisting of (a) quarter-annual cash payment of $10,000, (b) 60,000 restricted stock units issued under the Plan that vest in four equal installments every six months during the term of the agreement subject to continued service, and (c) an annual award under the Plan of options exercisable over a term of 10 years to purchase common stock with a value of $150,000 at the time of the award based on a Black-Scholes calculation.

John Stetson was an executive officer Company serving as the Chief Investment Officer. On September 7, 2018, the employment of John Stetson in any capacity with the Company, including as Chief Investment Officer, was terminated.