Related Party Receivables (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 11, 2014	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014	Oct. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Related-party accounts receivable		$ 2,667		$ 2,667		$ 533
Total marketable securities, net of tax		$ (28)	$ 67	$ (191)	$ 67
Velocys [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments to Acquire Marketable Securities	$ 2,000
Marketable Securities	1,527
Premium Paid, Investments	$ 473
MTD Holdings Inc. [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Related-party accounts receivable						$ 533