Note 9 - Segment Information (Detail) - Financial Information by Geographic Segment: (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Revenue-
Product sales	$ 13,353,000	$ 11,324,000	$ 35,408,000	$ 37,370,000
Service revenue	6,255,000	5,206,000	17,134,000	15,265,000
Commission revenue	6,537,000	5,821,000	16,786,000	14,132,000
Total revenue	26,145,000	22,351,000	69,328,000	66,767,000
Cost of revenue-
Cost of product sales	8,531,000	7,596,000	22,721,000	25,599,000
Cost of service revenue	3,996,000	3,444,000	11,506,000	9,776,000
Total cost of revenue	12,527,000	11,040,000	34,227,000	35,375,000
Gross margin	13,618,000	11,311,000	35,101,000	31,392,000
Total operating expenses	10,711,000	9,523,000	30,114,000	27,666,000
Operating income (loss)	2,907,000	1,788,000	4,987,000	3,726,000
Other expense, net	(242,000)	(79,000)	(347,000)	(417,000)
Income (loss) before income taxes	2,665,000	1,709,000	4,640,000	3,309,000
North America [Member]
Revenue-
Product sales	12,042,000	10,212,000	31,661,000	33,038,000
Service revenue	5,967,000	4,786,000	16,118,000	13,979,000
Commission revenue	6,099,000	5,550,000	15,797,000	13,440,000
Total revenue	24,108,000	20,548,000	63,576,000	60,457,000
Cost of revenue-
Cost of product sales	7,471,000	6,733,000	19,778,000	22,520,000
Cost of service revenue	3,731,000	3,209,000	10,689,000	8,996,000
Total cost of revenue	11,202,000	9,942,000	30,467,000	31,516,000
Gross margin	12,906,000	10,606,000	33,109,000	28,941,000
Total operating expenses	9,745,000	8,753,000	27,522,000	25,369,000
Operating income (loss)	3,161,000	1,853,000	5,587,000	3,572,000
Other expense, net	(196,000)	(80,000)	(319,000)	(405,000)
Income (loss) before income taxes	2,965,000	1,733,000	5,268,000	3,167,000
Singapore/Malaysia [Member]
Revenue-
Product sales	884,000	639,000	2,458,000	2,308,000
Service revenue	84,000	122,000	261,000	461,000
Commission revenue	211,000	66,000	313,000	167,000
Total revenue	1,179,000	827,000	3,032,000	2,936,000
Cost of revenue-
Cost of product sales	739,000	514,000	2,018,000	1,671,000
Cost of service revenue	84,000	71,000	266,000	349,000
Total cost of revenue	823,000	585,000	2,284,000	2,020,000
Gross margin	356,000	242,000	748,000	916,000
Total operating expenses	478,000	294,000	1,053,000	864,000
Operating income (loss)	(122,000)	(52,000)	(305,000)	52,000
Other expense, net	(52,000)	(6,000)	(47,000)	(29,000)
Income (loss) before income taxes	(174,000)	(58,000)	(352,000)	23,000
Australia [Member]
Revenue-
Product sales	427,000	473,000	1,289,000	2,024,000
Service revenue	204,000	298,000	755,000	825,000
Commission revenue	227,000	205,000	676,000	525,000
Total revenue	858,000	976,000	2,720,000	3,374,000
Cost of revenue-
Cost of product sales	321,000	349,000	925,000	1,408,000
Cost of service revenue	181,000	164,000	551,000	431,000
Total cost of revenue	502,000	513,000	1,476,000	1,839,000
Gross margin	356,000	463,000	1,244,000	1,535,000
Total operating expenses	488,000	476,000	1,539,000	1,433,000
Operating income (loss)	(132,000)	(13,000)	(295,000)	102,000
Other expense, net	6,000	7,000	19,000	17,000
Income (loss) before income taxes	$ (126,000)	$ (6,000)	$ (276,000)	$ 119,000