Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 26, 2015	Mar. 31, 2015
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 5,463	$ 5,109
Preferred stock, par value (in US$ per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in US$ per share)	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	26,456,000	26,305,000
Common stock, shares outstanding	15,375,000	15,365,000
Treasury stock, shares	11,081,000	10,940,000