CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jan. 26, 2013	Apr. 28, 2012
Current assets
Receivables, allowance	$ 23,365	$ 22,705
Shareholders' equity
Preferred shares, authorized (in shares)	5,000	5,000
Preferred shares, issued (in shares)	0	0
Preferred shares, outstanding	0	0
Common shares, par value (in dollars per share)	$ 1	$ 1
Common shares, authorized (in shares)	150,000	150,000
Common shares, outstanding (in shares)	52,390	52,244