Income Taxes Income Taxes-Deferred Tax Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Apr. 01, 2012
Deferred tax assets:
Trade receivables	$ 188	$ 184
Stock compensation accruals	776	601
Pension withdrawal liability	2,902	0
Other accruals	1,031	756
Other	69	82
Total deferred tax assets	4,966	1,623
Deferred tax liabilities:
Inventories	(3,319)	(3,556)
Prepaid	(525)	(703)
Excess of tax over book depreciation	(11,385)	(10,807)
Amortization of intangibles	(354)	(149)
Total deferred tax liabilities	(15,583)	(15,215)
Net deferred tax liabilities	$ (10,617)	$ (13,592)