Consolidated Statements of Operation and Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Sep. 24, 2011	Sep. 25, 2010	Sep. 24, 2011	Sep. 25, 2010
Consolidated Statements of Operation and Comprehensive Income [Abstract]
Product Sales	$ 16,969	$ 13,472	$ 34,151	$ 26,447
Service Revenue	8,214	7,448	16,637	15,101
Net Revenue	25,183	20,920	50,788	41,548
Cost of Products Sold	12,658	10,270	25,572	19,744
Cost of Services Sold	6,372	5,692	12,765	11,488
Total Cost of Products and Services Sold	19,030	15,962	38,337	31,232
Gross Profit	6,153	4,958	12,451	10,316
Selling, Marketing and Warehouse Expenses	3,042	2,529	6,668	5,578
Administrative Expenses	1,870	1,522	3,972	3,380
Total Operating Expenses	4,912	4,051	10,640	8,958
Operating Income	1,241	907	1,811	1,358
Interest Expense	28	16	56	28
Other Expense, net	10	17	27	12
Total Other Expense	38	33	83	40
Income Before Income Taxes	1,203	874	1,728	1,318
Provision for Income Taxes	457	347	657	513
Net Income	746	527	1,071	805
Other Comprehensive (Loss) Income	(15)	11	(14)	10
Comprehensive Income	$ 731	$ 538	$ 1,057	$ 815
Basic Earnings Per Share	$ 0.10	$ 0.07	$ 0.15	$ 0.11
Average Shares Outstanding	7,302	7,308	7,290	7,298
Diluted Earnings Per Share	$ 0.10	$ 0.07	$ 0.14	$ 0.11
Average Shares Outstanding	7,640	7,541	7,624	7,537