QUARTERLY FINANCIAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Sales and service fees	$ 65,693	$ 52,535	$ 50,183	$ 50,972	$ 62,223	$ 55,379	$ 53,731	$ 50,970	$ 219,383	$ 222,303	$ 192,804
Gross profit	$ 19,355	$ 16,630	$ 16,559	$ 16,547	$ 20,052	$ 18,012	$ 16,629	$ 13,919	69,091	68,612	55,056
Gross profit margin	29.00%	32.00%	33.00%	32.00%	32.00%	33.00%	31.00%	27.00%
Selling, general and administrative expenses	$ 12,632	$ 11,351	$ 10,850	$ 10,454	$ 12,940	$ 11,869	$ 11,206	$ 10,600	45,287	46,615	41,413
Operating income	6,723	5,279	5,709	6,093	7,112	6,143	5,423	3,319	23,804	21,997	13,643
Provision for income taxes	1,851	1,573	1,878	2,037	2,045	1,684	1,585	904	7,339	6,218	4,252
Net income	$ 4,804	$ 3,683	$ 3,961	$ 3,766	$ 4,863	$ 4,375	$ 3,536	$ 2,369	$ 16,214	$ 15,143	$ 8,190
Income per common share - basic (in dollars per share)	$ 0.73	$ 0.56	$ 0.60	$ 0.57	$ 0.74	$ 0.67	$ 0.54	$ 0.36	$ 2.46	$ 2.31	$ 1.26
Income per common share - diluted (in dollars per share)	$ 0.72	$ 0.55	$ 0.60	$ 0.57	$ 0.74	$ 0.66	$ 0.54	$ 0.36	$ 2.44	$ 2.30	$ 1.25

Gross Profit Margin.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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