CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 28, 2013	Mar. 30, 2013
Statement of Financial Position [Abstract]
Trade receivables, allowances	$ 464	$ 442
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	97,056	98,734
Finite-Lived Intangible Assets, Accumulated Amortization	$ 17,524	$ 15,393
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	30,095,000	29,583,000
Common stock, outstanding	30,095,000	29,583,000