Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 2,315,363us-gaap_NetIncomeLoss	$ 1,819,281us-gaap_NetIncomeLoss
Adjustments to reconcile income from operations to net cash flows from operating activities:
Depreciation	984,662us-gaap_Depreciation	1,070,374us-gaap_Depreciation
Amortization	182,500us-gaap_AdjustmentForAmortization	182,500us-gaap_AdjustmentForAmortization
(Gain) loss on sale of property and equipment	7,036	(24,746)
Equity-based compensation	607,661us-gaap_ShareBasedCompensation	717,821us-gaap_ShareBasedCompensation
Deferred income taxes	238,555us-gaap_DeferredIncomeTaxExpenseBenefit	462,447us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for losses on doubtful accounts	159,999us-gaap_ProvisionForDoubtfulAccounts	132,000us-gaap_ProvisionForDoubtfulAccounts
Provision for losses (recoveries) on inventory obsolescence	(34,189)us-gaap_InventoryWriteDown	(1,121)us-gaap_InventoryWriteDown
Other	(4,023)us-gaap_OtherNoncashIncomeExpense	(4,023)us-gaap_OtherNoncashIncomeExpense
Changes in assets and liabilities:
Accounts receivable	2,279,407	1,356,409
Inventories	(21,852,218)us-gaap_IncreaseDecreaseInInventories	(2,474,084)us-gaap_IncreaseDecreaseInInventories
Prepaid and other current assets	1,708,944	5,700
Other assets	111,792	13,054
Accounts payable	200,996	(34,071)
Accrued expenses and accrued wages, salaries and bonuses	(862,235)	(1,565,640)
Income taxes payable	(1,577,138)	(1,618,592)
Net cash flows from operating activities	(15,532,888)	37,309
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(611,106)	(1,362,832)
Proceeds from sales of property and equipment	7,800	29,969
Acquisition		(513,938)
Net cash flows from investing activities	(603,306)	(1,846,801)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings (payments) on bank credit agreements	16,881,883	4,926,619
Principal payments on long-term debt	(169,782)us-gaap_RepaymentsOfLongTermDebt	(607,923)us-gaap_RepaymentsOfLongTermDebt
Repurchase of Series B Convertible Preferred Stock and common stock		(1,941,918)
Dividends paid on convertible preferred stock	(97,285)	(97,285)
Dividends on common stock	(232,488)us-gaap_PaymentsOfDividendsCommonStock	(239,362)us-gaap_PaymentsOfDividendsCommonStock
Withholdings on the exercise of equity-based awards	(156,497)	(109,115)
Net cash flow from financing activities	16,225,831	1,931,016
Net change in cash	89,637	121,524
Cash, beginning of period	99,922us-gaap_Cash	275,036us-gaap_Cash
Cash, end of period	189,559us-gaap_Cash	396,560us-gaap_Cash
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	403,758us-gaap_InterestPaid	523,081us-gaap_InterestPaid
Cash paid during the year for income taxes	3,060,584us-gaap_IncomeTaxesPaid	2,585,145us-gaap_IncomeTaxesPaid
Supplemental disclosure of non-cash information:
Equipment acquisitions classified as accounts payable	48,754	152,311
Issuance of common stock in connection with the vesting and exercise of equity-based awards	$ 1,240,842us-gaap_StockIssued1	$ 1,154,869us-gaap_StockIssued1

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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The fair value of stock issued in noncash financing activities.

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