Consolidated Balance Sheets Parenthetical (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 29, 2012	Mar. 31, 2012
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 6,074	$ 6,273
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	25,898,000	25,730,000
Common stock, shares outstanding	16,536,000	17,480,000
Treasury stock, shares	9,362,000	8,250,000