Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Nov. 30, 2021	Nov. 30, 2020
Statement of Financial Position [Abstract]
Allowances on accounts receivable	$ 634	$ 1,315
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	44,146,193	44,240,635
Common stock, shares outstanding (in shares)	44,146,193	44,240,635