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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Apr. 30, 2015
Apr. 30, 2014
OPERATING ACTIVITIES:    
Net income $ 514us-gaap_NetIncomeLoss $ 742us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Bad debt (recovery) expense 12us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs (29)us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Accounts receivable write-off 4us-gaap_ProvisionForDoubtfulAccounts 4us-gaap_ProvisionForDoubtfulAccounts
Depreciation and amortization 389us-gaap_DepreciationAndAmortization 294us-gaap_DepreciationAndAmortization
Stock-based compensation expense 101us-gaap_ShareBasedCompensation 271us-gaap_ShareBasedCompensation
Inventory write-off 10us-gaap_InventoryWriteDown 0us-gaap_InventoryWriteDown
Excess tax benefit from stock-based compensation 0us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities (277)us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
Changes in operating assets and liabilities:    
Trade accounts receivable (907)us-gaap_IncreaseDecreaseInAccountsReceivable 494us-gaap_IncreaseDecreaseInAccountsReceivable
Inventories 169us-gaap_IncreaseDecreaseInInventories 421us-gaap_IncreaseDecreaseInInventories
Other current assets 4us-gaap_IncreaseDecreaseInOtherCurrentAssets 865us-gaap_IncreaseDecreaseInOtherCurrentAssets
Other long-term assets 0us-gaap_IncreaseDecreaseInOtherNoncurrentAssets 9us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
Accounts payable (49)us-gaap_IncreaseDecreaseInAccountsPayable (484)us-gaap_IncreaseDecreaseInAccountsPayable
Income taxes payable 164us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable 277us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable
Accrued expenses (1,195)us-gaap_IncreaseDecreaseInAccruedLiabilities (587)us-gaap_IncreaseDecreaseInAccruedLiabilities
Net cash provided by (used in) operating activities (784)us-gaap_NetCashProvidedByUsedInOperatingActivities 2,000us-gaap_NetCashProvidedByUsedInOperatingActivities
INVESTING ACTIVITIES:    
Acquisition of business (Comnet), net of cash acquired ($541) (2,249)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired 0us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Capital expenditures (124)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (59)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Net cash used in investing activities (2,373)us-gaap_NetCashProvidedByUsedInInvestingActivities (59)us-gaap_NetCashProvidedByUsedInInvestingActivities
FINANCING ACTIVITIES:    
Proceeds from exercise of stock options 6us-gaap_ProceedsFromStockOptionsExercised 462us-gaap_ProceedsFromStockOptionsExercised
Excess tax benefit from exercise of stock options 0us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities 277us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Dividends paid (1,174)us-gaap_PaymentsOfDividendsCommonStock (1,145)us-gaap_PaymentsOfDividendsCommonStock
Net cash used in financing activities (1,168)us-gaap_NetCashProvidedByUsedInFinancingActivities (406)us-gaap_NetCashProvidedByUsedInFinancingActivities
Net increase (decrease) in cash and cash equivalents (4,325)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 1,535us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents, beginning of period 14,718us-gaap_CashAndCashEquivalentsAtCarryingValue 11,881us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents, end of period 10,393us-gaap_CashAndCashEquivalentsAtCarryingValue 13,416us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental cash flow information - income taxes paid 104us-gaap_IncomeTaxesPaid 0us-gaap_IncomeTaxesPaid
Noncash investing and financing activities:    
Stock issuance for acquisition of business (Comnet) $ 1,060us-gaap_StockIssuedDuringPeriodValueAcquisitions $ 0us-gaap_StockIssuedDuringPeriodValueAcquisitions