CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
CONSOLIDATED STATEMENTS OF INCOME [Abstract]
Service Revenue	$ 14,190	$ 12,595	$ 27,725	$ 24,733
Distribution Sales	15,286	18,516	31,421	35,497
Total Revenue	29,476	31,111	59,146	60,230
Cost of Service Revenue	10,729	9,323	20,733	18,524
Cost of Distribution Sales	12,010	14,862	24,614	28,111
Total Cost of Revenue	22,739	24,185	45,347	46,635
Gross Profit	6,737	6,926	13,799	13,595
Selling, Marketing and Warehouse Expenses	3,229	3,169	6,769	6,904
Administrative Expenses	2,138	2,241	4,633	4,416
Total Operating Expenses	5,367	5,410	11,402	11,320
Operating Income	1,370	1,516	2,397	2,275
Interest and Other Expense, net	36	138	131	183
Income Before Income Taxes	1,334	1,378	2,266	2,092
Provision for Income Taxes	456	519	787	788
Net Income	$ 878	$ 859	$ 1,479	$ 1,304
Basic Earnings Per Share (in Dollars per share)	$ 0.13	$ 0.13	$ 0.22	$ 0.19
Average Shares Outstanding (in Shares)	6,886	6,802	6,868	6,772
Diluted Earnings Per Share (in Dollars per share)	$ 0.12	$ 0.12	$ 0.21	$ 0.18
Average Shares Outstanding (in Shares)	7,119	7,056	7,135	7,050