DEBT: (Details) (USD $)			12 Months Ended			12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Prime rate	Sep. 30, 2012 Facility	Sep. 30, 2012 Facility Maximum	Sep. 30, 2012 Facility Minimum	Sep. 30, 2012 Facility LIBOR
Revolving credit facility
Revolving portion of the facility	$ 14,353,732	$ 20,771,613
Interest rate (as a percent)	2.37%
Revolving credit limit				70,000,000
Increase in borrowing capacity available under loan accordion				25,000,000
Additional credit advances for certain inventory purchases				$ 5,000,000
Automatic renewal period of agreement unless terminated				1 year
Notice period prior to the end of the original term of the agreement or the end of any renewal period required for terminating the agreement either by the borrower or lender						90 days
Prepayment penalty in year one of the agreement (as a percent)				0.50%
Prepayment penalty in year two of the agreement (as a percent)				0.25%
Variable rate basis			Prime rate				LIBOR
Basis points added to reference rate (as a percent)							1.75%
Unused commitment fee (as a percent)				0.25%
Restricted amount of dividends on common stock (in dollars per share)					$ 1.00
Fixed charge coverage ratio						1.1
Period considered for computing fixed charge coverage ratio				12 months
Threshold of excess availability of credit as a percentage of maximum loan limit, required for financial covenant compliance				10.00%