Represents information about accounts receivable advances term range one included by credit facilities amendment.

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Represents the advance rate on accounts receivable advances term range one included by credit facilities amendment.

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No definition available.

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Represents information about accounts receivable advances term range two included by credit facilities amendment.

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Represents the advance rate on accounts receivable advances term range two included by credit facilities amendment.

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No definition available.

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Maximum amount of stock repurchases in connection with the distribution limitations in fifth amendment related to repurchases of the Company’s stock.

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The maximum leverage ratio of the company before certain debt contingencies arise.

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Additional borrowing capacity of line of credit facility with an accordion feature.

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Represents maximum aggregate amount of stock repurchases under distribution limitations.

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No definition available.

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Represents the distribution limitations, minimum percentage of aggregate funds available.

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No definition available.

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Represents the distribution limitations, percentage of consolidated net income.

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No definition available.

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Represents the distribution limitations, percentage of sum of borrowing bases.

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No definition available.

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Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Face (par) amount of debt instrument at time of issuance.

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Incremental percentage increase (decrease) in the stated rate on a debt instrument.

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No definition available.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the required periodic payments including both interest and principal payments.

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Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Note F - Debt Facilities (Details Textual)								3 Months Ended		6 Months Ended	9 Months Ended	15 Months Ended
Note F - Debt Facilities (Details Textual)	Jul. 31, 2018 USD ($)	Apr. 30, 2018 USD ($)	Mar. 29, 2018	Oct. 25, 2017 USD ($)	Dec. 12, 2016 USD ($)	Oct. 31, 2016	Dec. 15, 2015 USD ($)	Jul. 31, 2018 USD ($)	Jul. 31, 2017 USD ($)	Oct. 24, 2017 USD ($)	Jul. 31, 2018 USD ($)	Jul. 31, 2018 USD ($)	Feb. 18, 2016 USD ($)
Amortization of Debt Issuance Costs and Discounts, Total								$ 69,000	$ 59,000
Debt Issuance Costs, Line of Credit Arrangements, Net, Total	$ 0	$ 103,000						0			$ 0	$ 0
Debt Issuance Costs, Gross	366,000	435,000						366,000			366,000	366,000
Capital Lease Obligations, Total	1,100,000	1,100,000						1,100,000			1,100,000	1,100,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	54,000	14,000						54,000			54,000	54,000
Assets Held under Capital Leases [Member]
Property, Plant and Equipment, Useful Life			3 years
Note Payable Related to the Property Purchase Agreement [Member]
Debt Instrument, Face Amount							$ 550,000
Debt Instrument, Periodic Payment, Total							$ 10,005
Debt Instrument, Interest Rate, Stated Percentage							3.50%
Long-term Debt, Total	278,000	$ 305,000						278,000			278,000	278,000
Revolving Credit Facility [Member]
Dividend Restrictions Maximum Aggregate Amount of Stock Repurchases				$ 50,000,000	$ 40,000,000
Line of Credit Facility, Maximum Borrowing Capacity					200,000,000								$ 172,500,000
Line of Credit Facility, Additional Borrowing Capacity, Accordion Feature	$ 44,000,000				$ 50,000,000			$ 44,000,000			44,000,000	$ 44,000,000
Debt Agreement, Accounts Receivable Advances, Term Range One, Rate					55.00%	50.00%
Debt Agreement, Accounts Receivable Advances, Term Range Two, Rate					50.00%	45.00%
Line of Credit Facility, Distribution Limitations Percentage of Sum of Borrowing Bases				20.00%						25.00%		20.00%
Leverage Ratio, Maximum Threshold				1.75
Line of Credit Facility, Distribution Limitations, Maximum Aggregate Amount of Stock Repurchases										$ 40,000,000	$ 50,000,000
Line of Credit Facility, Distribution Limitations Percentage of Consolidated Net Income												75.00%
Line of Credit Facility Distribution Limitations Minimum Percentage of Aggregate Funds Available												12.50%
Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	4.43%	4.25%		2.35%
Revolving Credit Facility [Member] \| Second Pricing Tier [Member]
Debt Instrument, Interest Rate, Increase (Decrease)				(0.025%)
Revolving Credit Facility [Member] \| Third Pricing Tier [Member]
Debt Instrument, Interest Rate, Increase (Decrease)				(0.125%)
Revolving Credit Facility [Member] \| Fourth Pricing Tier [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate				2.875%
Revolving Credit Facility [Member] \| Minimum [Member]
Debt Agreement, Accounts Receivable Advances, Term Range One					3 years 30 days
Debt Agreement, Accounts Receivable Advances, Term Range Two					3 years 210 days
Revolving Credit Facility [Member] \| Maximum [Member]
Debt Agreement, Accounts Receivable Advances, Term Range One					3 years 180 days
Debt Agreement, Accounts Receivable Advances, Term Range Two					5 years