CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 30, 2013	Mar. 31, 2012
Statement of Financial Position [Abstract]
Trade receivables, allowances	$ 442	$ 390
Preferred stock, without par value	$ 0	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, without par value	$ 0	$ 0
Common stock, shares authorized	100,000,000	100,000,000
Common stock, issued	29,583,000	28,970,000
Common stock, outstanding	29,583,000	28,970,000