Note 16 - Summary of Quarterly Results (Unaudited) (Detail) - Quarterly Results (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2009	Jun. 30, 2008
2012
Net sales (in Dollars)	$ 268,402		$ 293,501		$ 254,402		$ 233,799	$ 305,286
Gross profit (in Dollars)	60,313		72,345		55,733
Net income (loss) (in Dollars)	3,224		10,828		1,424		(13,414)	(13,048)
Earnings (loss) per share
Basic	$ 0.13	[1]	$ 0.45		$ 0.06	[1]	$ (0.62)	$ (0.60)
Diluted	$ 0.13	[1],[2]	$ 0.44	[1],[2]	$ 0.06	[1],[2]	$ (0.62)	$ (0.60)
Maximum [Member] | Quarter Ended September 30 [Member]
Range of share prices
Share prices	$ 8.91		$ 6.46		$ 8.48
Maximum [Member] | Quarter Ended December 31 [Member]
Range of share prices
Share prices	$ 7.04		$ 9.61		$ 8.43
Maximum [Member] | Quarter Ended March 31 [Member]
Range of share prices
Share prices	$ 7.70		$ 8.79		$ 8.42
Maximum [Member] | Quarter Ended June 30 [Member]
Range of share prices
Share prices	$ 7.64		$ 8.62		$ 7.41
Maximum [Member]
Range of share prices
Share prices	$ 8.91		$ 9.61		$ 8.48
Minimum [Member] | Quarter Ended September 30 [Member]
Range of share prices
Share prices	$ 5.93		$ 4.69		$ 5.05
Minimum [Member] | Quarter Ended December 31 [Member]
Range of share prices
Share prices	$ 5.45		$ 6.38		$ 6.52
Minimum [Member] | Quarter Ended March 31 [Member]
Range of share prices
Share prices	$ 5.85		$ 6.86		$ 5.50
Minimum [Member] | Quarter Ended June 30 [Member]
Range of share prices
Share prices	$ 5.81		$ 6.90		$ 4.86
Minimum [Member]
Range of share prices
Share prices	$ 5.45		$ 4.69		$ 4.86
Quarter Ended September 30 [Member]
2012
Net sales (in Dollars)	65,495		79,851		67,676
Gross profit (in Dollars)	15,464		20,622		16,597
Net income (loss) (in Dollars)	1,324		4,268		1,637
Earnings (loss) per share
Basic	$ 0.05		$ 0.18		$ 0.07
Diluted	$ 0.05		$ 0.18		$ 0.07
Quarter Ended December 31 [Member]
2012
Net sales (in Dollars)	68,774		74,805		69,374
Gross profit (in Dollars)	14,926		18,647		16,300
Net income (loss) (in Dollars)	772		2,948		1,592
Earnings (loss) per share
Basic	$ 0.03		$ 0.12		$ 0.07
Diluted	$ 0.03		$ 0.12		$ 0.07
Quarter Ended March 31 [Member]
2012
Net sales (in Dollars)	62,937		64,628		53,466
Gross profit (in Dollars)	13,316		16,324		8,873
Net income (loss) (in Dollars)	(377)		2,115		(2,532)
Earnings (loss) per share
Basic	$ (0.02)		$ 0.09		$ (0.10)
Diluted	$ (0.02)		$ 0.09		$ (0.10)
Quarter Ended June 30 [Member]
2012
Net sales (in Dollars)	71,196		74,217		63,886
Gross profit (in Dollars)	16,607		16,752		13,963
Net income (loss) (in Dollars)	$ 1,505		$ 1,497		$ 727
Earnings (loss) per share
Basic	$ 0.06		$ 0.06		$ 0.03
Diluted	$ 0.06		$ 0.06		$ 0.03

[1] The total of the earnings per share for each of the four quarters does not equal the total earnings per share for the full year because the calculations are based on the average shares outstanding during each of the individual periods.

[2] Calculated using the "Treasury Stock" method as if dilutive securities were exercised and the funds were used to purchase common shares at the average market price during the period.