Note 15 - Summary of Quarterly Results (Unaudited) (Details) - Quarterly Results (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2011	Jun. 30, 2010
Note 15 - Summary of Quarterly Results (Unaudited) (Details) - Quarterly Results [Line Items]
Net sales (in Dollars)	$ 73,858	$ 68,996	$ 76,123	$ 80,486	$ 68,837	$ 66,152	$ 71,082	$ 74,719	$ 71,196	$ 62,937	$ 68,774	$ 65,495	$ 299,463	[1]	$ 280,790	[1]	$ 268,402	[1]	$ 293,501	$ 254,402
Gross profit (in Dollars)	15,704	13,715	16,757	19,122	14,736	13,921	13,882	17,871	16,607	13,316	14,926	15,464	65,298		60,410		60,313
Net income (loss) (in Dollars)	(796)	(1,009)	870	1,865	812	(315)	(2,450)	1,830	1,505	(377)	772	1,324	930		(123)		3,224		10,828	1,424
Earnings (loss) per share
Basic	$ (0.03)	$ (0.04)	$ 0.04	$ 0.08	$ 0.03	$ (0.01)	$ (0.10)	$ 0.08	$ 0.06	$ (0.02)	$ 0.03	$ 0.05	$ 0.04		$ (0.01)		$ 0.13		$ 0.45	$ 0.06
Diluted	$ (0.03)	$ (0.04)	$ 0.04	$ 0.08	$ 0.03	$ (0.01)	$ (0.10)	$ 0.08	$ 0.06	$ (0.02)	$ 0.03	$ 0.05	$ 0.04		$ (0.01)		$ 0.13		$ 0.44	$ 0.06
Fiscal Year [Member]
Note 15 - Summary of Quarterly Results (Unaudited) (Details) - Quarterly Results [Line Items]
Net sales (in Dollars)													299,463		280,790		268,402
Gross profit (in Dollars)													65,298		60,410		60,313
Net income (loss) (in Dollars)													$ 930		$ (123)		$ 3,224
Earnings (loss) per share
Basic													$ 0.04	[2]	$ (0.01)	[2]	$ 0.13	[2]
Diluted													$ 0.04	[2]	$ (0.01)	[2]	$ 0.13	[2]
Fiscal Year [Member] | Maximum [Member]
Range of share prices
Share price	$ 9.67				$ 8.46				$ 8.91				$ 9.67		$ 8.46		$ 8.91
Fiscal Year [Member] | Minimum [Member]
Range of share prices
Share price	$ 6.65				$ 6.10				$ 5.45				$ 6.65		$ 6.10		$ 5.45
Maximum [Member]
Range of share prices
Share price	$ 8.78	$ 9.67	$ 9.60	$ 9.00	$ 8.46	$ 7.77	$ 7.38	$ 7.42	$ 7.64	$ 7.70	$ 7.04	$ 8.91	$ 8.78		$ 8.46		$ 7.64
Minimum [Member]
Range of share prices
Share price	$ 7.10	$ 7.54	$ 7.76	$ 6.65	$ 6.78	$ 6.80	$ 6.10	$ 6.19	$ 5.81	$ 5.85	$ 5.45	$ 5.93	$ 7.10		$ 6.78		$ 5.81

[1] Net sales are attributed to geographic areas based upon the location of the operation making the sale.

[2] 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.