Related Party Receivables (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Mar. 11, 2014	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015	Oct. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Related-party accounts receivable		$ 841		$ 841		$ 1,092
Total marketable securities, net of tax		(38)	$ (168)	(158)	$ (359)
MTD Holdings Inc. [Member] | Significant Shareholder [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenue from Related Parties		1,099	1,577	3,184	5,364
Related-party accounts receivable		841		841		$ 1,092
Velocys [Member] | Investee [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenue from Related Parties		$ 5	$ 1,163	$ 12	$ 1,360
Payments to Acquire Marketable Securities	$ 2,000
Marketable Securities	1,527
Premium Paid, Investments	$ 473