Note 7. Line of Credit (Details) (USD $)	3 Months Ended
	Dec. 31, 2012
Line of Credit Facility, Interest Rate Description	Interest on the line of credit is based on the 90-day LIBOR rate (.31% as of December 31, 2012) plus 3.5%
Line of Credit Facility, Collateral	Borrowing limitations are based on approximately 45% of eligible inventory and up to 80% of eligible accounts receivable
Line of Credit Facility, Maximum Borrowing Capacity	$ 7,000,000
Line of Credit Facility, Amount Outstanding	5,045,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 1,252,000