Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable

6 Months Ended

Apr. 30, 2014

Allowance For Doubtful Accounts For Trade Accounts Receivable Disclosure [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 six months ended April 30, 2014 and 2013 follows:

	Six Months Ended April 30,
	2014		2013
Balance at beginning of period	$	74,073	$	92,148
Bad debt expense (recovery)		12,111		(17,756	)
Recoveries added to allowance		—		387
Balance at end of period	$	86,184	$	74,779