Schedule II Valuation and Qualifying Accounts (Details) (Allowance for Doubtful Accounts from Continuing Operations [Member], USD $)	12 Months Ended
	Oct. 31, 2012		Oct. 31, 2011		Oct. 31, 2010
Allowance for Doubtful Accounts from Continuing Operations [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 642,761		$ 987,950		$ 1,027,268
Balances of acquired companies	0		0		0
Additions charged to costs and expense	728,882		282,612		304,333
Deductions	(214,178)	[1]	(627,801)	[1]	(343,651)	[1]
Balance at end of period	$ 1,157,465		$ 642,761		$ 987,950

[1] Uncollectible accounts written off, net of recoveries.