Note 13 - Selected Quarterly Financial Data (Uaudited) (Detail) - Table of Unaudited Quarterly Financial Data for Fiscal 2011 and 2010 (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Net sales and service	$ 17,620	$ 14,413	$ 10,918
Net income	7,545	6,292	3,242
First [Member]
Net sales and service	15,453	12,530
Gross profit	10,311	8,365
Net income	1,493	1,052
Net income per share, basic (in Dollars per share)	$ 0.18	$ 0.13
Net income per share, diluted (in Dollars per share)	$ 0.18	$ 0.13
Second [Member]
Net sales and service	15,621	13,243
Gross profit	10,419	8,997
Net income	1,733	1,735
Net income per share, basic (in Dollars per share)	$ 0.21	$ 0.22
Net income per share, diluted (in Dollars per share)	$ 0.21	$ 0.21
Third [Member]
Net sales and service	16,857	13,774
Gross profit	10,909	9,201
Net income	1,856	1,403
Net income per share, basic (in Dollars per share)	$ 0.23	$ 0.18
Net income per share, diluted (in Dollars per share)	$ 0.22	$ 0.17
Fourth [Member]
Net sales and service	16,670	15,976
Gross profit	11,316	10,527
Net income	$ 2,463	$ 2,102
Net income per share, basic (in Dollars per share)	$ 0.30	$ 0.26
Net income per share, diluted (in Dollars per share)	$ 0.29	$ 0.25