Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 2,676,646	$ 2,903,085
Adjustments to reconcile net income from operations to net cash flows from operating activities:
Depreciation	1,011,147	1,035,231
Amortization	182,500	192,190
Gain on sale of property and equipment	(71,131)	(22,216)
Equity-based compensation	652,421	674,180
Deferred income taxes	457,525	453,989
Provision for losses on doubtful accounts	39,000	164,757
Provision for losses on inventory obsolescence	49,179	7,827
Other	(4,023)	(4,023)
Changes in assets and liabilities:
Accounts receivable	1,686,669	813,322
Inventories	(780,967)	3,645,697
Prepaid and other current assets	152,987	(1,308,654)
Other assets	36,724	(48,424)
Accounts payable	(1,802,183)	(2,062,052)
Accrued expenses and accrued wages, salaries and bonuses	(1,123,486)	(1,509,628)
Income tax payable	(2,060,080)	(1,268,395)
Net cash flows from operating activities	1,102,928	3,666,886
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(1,104,229)	(707,724)
Proceeds from sales of property and equipment	139,540	40,820
Net cash flows from investing activities	(964,689)	(666,904)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net borrowings (payments) on bank credit agreements	3,378,417	(1,464,646)
Principal payments on long-term debt	(587,355)	(732,440)
Repurchase of Series B Convertible Preferred Stock and common stock	(2,572,085)	(918,000)
Dividends paid on convertible preferred stock	(107,399)	(134,547)
Dividends on common stock	(234,917)	(238,628)
Proceeds from exercise of stock options	1,180	1,180
Withholdings on the exercise of equity-based awards	(74,610)	(51,452)
Net cash flows from financing activities	(196,769)	(3,538,533)
Net change in cash	(58,530)	(538,551)
Cash, beginning of period	491,387	1,389,665
Cash, end of period	432,857	851,114
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	564,422	770,110
Cash paid during the period for income taxes	3,583,555	2,787,407
Supplemental disclosure of non-cash information:
Equipment acquisitions classified as accounts payable	57,412	5,185
Issuance of common stock in connection with the vesting and exercise of equity-based awards	1,389,258	950,562
Conversion by holder of Series B Convertible Preferred Stock to common stock	100,000
Common stock acquired with other consideration	$ 760,871