Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Feb. 29, 2020	Nov. 30, 2019	Jun. 01, 2019
Allowance for doubtful accounts	$ 825		$ 206
Common stock, shares outstanding (in shares)	48,774,000
Treasury stock, shares (in shares)	26,287,000	26,366,000
Common Stock
Common stock, par value per share (in dollars per share)	$ 0.01		$ 0.01
Common stock, shares authorized (in shares)	120,000,000		120,000,000
Common stock, shares issued (in shares)	70,261,000		70,261,000
Common stock, shares outstanding (in shares)	43,974,000		43,895,000
Class A Common Stock
Common stock, par value per share (in dollars per share)	$ 0.01		$ 0.01
Common stock, shares authorized (in shares)	4,800,000		4,800,000
Common stock, shares issued (in shares)	4,800,000		4,800,000
Common stock, shares outstanding (in shares)	4,800,000		4,800,000