Calculation of basic and diluted earnings per share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Numerators:
Consolidated net income (A)	$ 3,828	$ 2,612
Denominators:
Weighted average shares outstanding for basic earnings per share (B)	7,600,029	6,908,890
Add effects of potentially dilutive securities - assumed exercise of stock options	855,602	771,853
Weighted average shares outstanding for diluted earnings per share (C)	8,455,631	7,680,743
Basic earnings per share (A)/(B)	$ 0.50	$ 0.38
Diluted earnings per share (A)/(C)	$ 0.46	$ 0.34