Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable

9 Months Ended

Jul. 31, 2014

Allowance For Doubtful Accounts For Trade Accounts Receivable Disclosure [Text Block] [Abstract]

Allowance For Doubtful Accounts For Trade Accounts Receivable Disclosure [Text Block]

(3) Allowance for Doubtful Accounts for Trade Accounts Receivable

A summary of changes in the allowance for doubtful accounts for trade accounts receivable for the nine months ended July 31, 2014 and 2013 follows:

	Nine Months Ended
	July 31,
	2014		2013
Balance at beginning of period	$	74,073	$	92,148
Bad debt expense		18,655		42,929
Recoveries added to allowance		—		387
Balance at end of period	$	92,728	$	135,464