Note 5 - Summary of Quarterly Results (Unaudited) (Details) - Summary of quarterly results: (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Note 5 - Summary of Quarterly Results (Unaudited) (Details) - Summary of quarterly results: [Line Items]
Net sales	$ 140,451	$ 186,337
Gross profit	29,830	45,644	17,701
Net (loss) income	5,236	22,852	(3,574)
Basic income (loss) per share (in Dollars per share)	$ 0.15	$ 0.67	$ (0.10)
Diluted income (loss) per share (in Dollars per share)	$ 0.15	$ 0.66	$ (0.10)
First Quarter [Member]
Note 5 - Summary of Quarterly Results (Unaudited) (Details) - Summary of quarterly results: [Line Items]
Net sales	35,877	47,046
Gross profit	9,077	13,178
Net (loss) income	2,977	9,703
Basic income (loss) per share (in Dollars per share)	$ 0.09	$ 0.28
Diluted income (loss) per share (in Dollars per share)	$ 0.09	$ 0.28
Second Quarter [Member]
Note 5 - Summary of Quarterly Results (Unaudited) (Details) - Summary of quarterly results: [Line Items]
Net sales	33,306	47,014
Gross profit	7,032	10,968
Net (loss) income	3,306	3,338
Basic income (loss) per share (in Dollars per share)	$ 0.09	$ 0.10
Diluted income (loss) per share (in Dollars per share)	$ 0.09	$ 0.10
Third Quarter [Member]
Note 5 - Summary of Quarterly Results (Unaudited) (Details) - Summary of quarterly results: [Line Items]
Net sales	30,310	48,078
Gross profit	6,202	11,278
Net (loss) income	(897)	5,566
Basic income (loss) per share (in Dollars per share)	$ (0.03)	$ 0.16
Diluted income (loss) per share (in Dollars per share)	$ (0.03)	$ 0.16
Fourth Quarter [Member]
Note 5 - Summary of Quarterly Results (Unaudited) (Details) - Summary of quarterly results: [Line Items]
Net sales	40,958	44,199
Gross profit	7,519	10,220
Net (loss) income	$ (150)	$ 4,245
Basic income (loss) per share (in Dollars per share)	$ 0.00	$ 0.13
Diluted income (loss) per share (in Dollars per share)	$ 0.00	$ 0.12