Consolidated Balance Sheets (USD $)	Feb. 28, 2015	Nov. 30, 2014
Current assets:
Cash	$ 6,306,264	$ 6,174,561
Accounts receivable - net of allowance for doubtful accounts of $102,207 and $93,765	4,216,765us-gaap_AccountsReceivableNetCurrent	4,433,994us-gaap_AccountsReceivableNetCurrent
Inventory, net	2,972,003us-gaap_InventoryNet	3,258,156us-gaap_InventoryNet
Prepaid expenses and income taxes	174,124	233,275
Deferred income taxes	369,549us-gaap_DeferredTaxAssetsNetCurrent	295,873us-gaap_DeferredTaxAssetsNetCurrent
Total current assets	14,038,705us-gaap_AssetsCurrent	14,395,859us-gaap_AssetsCurrent
Fixed assets - net of accumulated depreciation and amortization of $2,122,940 and $2,114,416	109,289us-gaap_PropertyPlantAndEquipmentNet	84,966us-gaap_PropertyPlantAndEquipmentNet
Deferred income taxes	739,097us-gaap_DeferredTaxAssetsNetNoncurrent	887,620us-gaap_DeferredTaxAssetsNetNoncurrent
Other assets	12,242us-gaap_OtherAssetsNoncurrent	11,652us-gaap_OtherAssetsNoncurrent
Total assets	14,899,333us-gaap_Assets	15,380,097us-gaap_Assets
Current liabilities:
Accounts payable	2,803,226us-gaap_AccountsPayableCurrent	3,288,798us-gaap_AccountsPayableCurrent
Accrued expenses and taxes	634,508us-gaap_AccruedLiabilitiesCurrent	785,002us-gaap_AccruedLiabilitiesCurrent
Accrued salaries	408,078us-gaap_AccruedSalariesCurrent	556,805us-gaap_AccruedSalariesCurrent
Total current liabilities	3,845,812us-gaap_LiabilitiesCurrent	4,630,605us-gaap_LiabilitiesCurrent
Deferred rent	41,052us-gaap_DeferredRentCreditNoncurrent	40,564us-gaap_DeferredRentCreditNoncurrent
Total liabilities	3,886,864us-gaap_Liabilities	4,671,169us-gaap_Liabilities
Commitments and contingencies
Shareholders' equity
Common stock - $.001 par value stock, 75,000,000 shares authorized, 9,218,815 and 9,080,012 shares issued and outstanding	9,219us-gaap_CommonStockValue	9,080us-gaap_CommonStockValue
Additional paid-in capital	23,300,917us-gaap_AdditionalPaidInCapital	23,192,407us-gaap_AdditionalPaidInCapital
Accumulated deficit	(12,297,689)	(12,492,581)
Total shareholders' equity	11,012,469us-gaap_StockholdersEquity	10,708,928us-gaap_StockholdersEquity
Total liabilities and shareholders' equity	14,899,333	15,380,097
Series A Preferred stock
Shareholders' equity
Preferred stock, Value
Series B Preferred stock
Shareholders' equity
Preferred stock, Value
Series C Preferred Stock
Shareholders' equity
Preferred stock, Value	$ 22	$ 22

Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and payments made in advance for income taxes, will be charged against earnings within one year or the normal operating cycle, if longer.

No definition available.