Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	May 30, 2020	May 25, 2019
Consolidated Balance Sheets [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 3,067	$ 2,520
Preferred stock, par value	$ 0.01	$ 0.01
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	$ 0.01	$ 0.01
Common stock, shares authorized	70,000,000	70,000,000
Common stock, shares issued	63,910,000	63,054,000
Common stock, shares outstanding	32,144,000	31,588,000
Treasury stock at cost, shares	31,766,000	31,466,000