Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Revenues:
Product	$ 12,197	$ 10,714	$ 34,651	$ 29,777
Service	6,081	6,213	18,662	18,743
Total revenues	18,278	16,927	53,313	48,520
Cost of sales:
Product	5,495	4,591	15,701	12,439
Service	2,535	2,336	7,906	7,726
Total cost of sales	8,030	6,927	23,607	20,165
Gross margin	10,248	10,000	29,706	28,355
Operating expenses:
Sales and marketing	3,595	3,527	10,590	10,808
Research and development	3,409	2,878	9,998	8,673
General and administrative	1,984	2,362	5,925	6,352
Total operating expenses	8,988	8,767	26,513	25,833
Operating income	1,260	1,233	3,193	2,522
Interest income	2	8	18	34
Interest expense	(9)	(15)	(41)	(50)
Other expense, net	(31)	(222)	(105)	(391)
Income before income taxes	1,222	1,004	3,065	2,115
Provision for income taxes	140	67	160	180
Net income	$ 1,082	$ 937	$ 2,905	$ 1,935
Net income per share
Basic (in dollars per share)	$ 0.12	$ 0.11	$ 0.33	$ 0.22
Diluted (in dollars per share)	$ 0.12	$ 0.11	$ 0.32	$ 0.22
Weighted average shares outstanding - basic (in shares)	8,944	8,754	8,897	8,726
Weighted average shares outstanding - diluted (in shares)	9,090	8,894	9,074	8,873
Cash dividends declared per common share (in dollars per share)	$ 0.12	$ 0.06	$ 0.36	$ 0.74