Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 30, 2017	Mar. 31, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 4,087	$ 4,084
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares issued (in shares)	0	0
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares outstanding (in shares)	15,139,000	14,960,000
Common stock, shares issued (in shares)	26,878,000	26,654,000
Treasury stock, shares (in shares)	11,739,000	11,694,000