CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
NET SALES	$ 6,706	$ 3,919	$ 18,645	$ 11,609
COST OF SALES	3,879	2,687	10,924	7,066
Gross profit	2,827	1,232	7,721	4,543
OPERATING EXPENSES:
General and administrative	955	630	3,019	2,036
Sales and marketing	631	502	1,808	1,278
Research and development	77	83	237	229
Loss on disposal of equipment and leasehold improvements	1		65
Total operating expenses	1,664	1,215	5,129	3,543
Income from operations	1,163	17	2,592	1,000
Interest expense, net	(14)	(16)	(38)	(54)
Income before provision for income taxes	1,149	1	2,554	946
PROVISION FOR (BENEFIT FROM) INCOME TAXES	36	(9)	81	11
NET INCOME	$ 1,113	$ 10	$ 2,473	$ 935
NET INCOME PER SHARE:
Basic (in dollars per share)	$ 0.21	$ 0.00	$ 0.46	$ 0.18
Diluted (in dollars per share)	$ 0.20	$ 0.00	$ 0.45	$ 0.17
SHARES USED IN CALCULATION OF NET INCOME PER SHARE:
Basic (in shares)	5,424	5,392	5,406	5,340
Diluted (in shares)	5,571	5,423	5,490	5,366