Note 7 - Bank Lines of Credit and Other Debt (Detail) (USD $)	6 Months Ended
	Dec. 31, 2012	Apr. 23, 2016	Sep. 30, 2012	Apr. 25, 2012
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)			$ 19,162
Line Of Credit Facility Maturity Term	6 months
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)		35,000,000
Letters Of Credit Maximum Borrowing Capacity (in Dollars)		5,000,000
Eligible Accounts Receivable Percentage		85.00%
Eligible Extended Pay Accounts Percentage		85.00%
Line Of Credit AR Limit Value (in Dollars)		1,500,000
Lineof Credit Inventory Value Ceiling (in Dollars)		20,000,000
Line Of Credit Facility Percentage Of Eligible Inventory		65.00%
Line Of Credit Facility Net Recovery Percentage		85.00%
Line Of Credit Inventory Reserve Amount (in Dollars)		3,500,000
Credit Facility Covenant Capital Expenditures (in Dollars)		2,400,000
Twenty Percent Of Line Of Credit Facility Maximum Borrowing Capacity		20.00%
Repayments On Lines Of Credit (in Dollars)				$ 9,924,000
Base Rate Loans [Member] | Line Of Credit Facility Less Than Fifty Percent Of Maximum Borrowing Capacity Member
Debt Instrument, Interest Rate, Stated Percentage		1.25%
Base Rate Loans [Member] | Line Of Credit Facility Greater Than Fifty Percent Of Maximum Borrowing Capacity Member
Debt Instrument, Interest Rate, Stated Percentage		1.50%
LIBOR Rate [Member] | Line Of Credit Facility Less Than Fifty Percent Of Maximum Borrowing Capacity Member
Debt Instrument, Interest Rate, Stated Percentage		2.25%
LIBOR Rate [Member] | Line Of Credit Facility Greater Than Fifty Percent Of Maximum Borrowing Capacity Member
Debt Instrument, Interest Rate, Stated Percentage		2.50%
Euros Or Pound Sterling Rate [Member] | Line Of Credit Facility Less Than Fifty Percent Of Maximum Borrowing Capacity Member
Debt Instrument, Interest Rate, Stated Percentage		3.00%
Euros Or Pound Sterling Rate [Member] | Line Of Credit Facility Greater Than Fifty Percent Of Maximum Borrowing Capacity Member
Debt Instrument, Interest Rate, Stated Percentage		3.25%
Line Of Credit Facility Less Than Fifty Percent Of Maximum Borrowing Capacity Member
Fifty Percent Of Line Of Credit Facility Maximum Borrowing Capacity		50.00%
Line Of Credit Facility Greater Than Fifty Percent Of Maximum Borrowing Capacity Member
Fifty Percent Of Line Of Credit Facility Maximum Borrowing Capacity		50.00%
Federal Funds Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		0.50%
LIBOR [Member]
Debt Instrument, Basis Spread on Variable Rate		1.00%