Earnings per share - Schedule of Calculation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023
Earnings Per Share [Abstract]
Net income	$ 16,188	$ 12,090	$ 38,827	$ 35,764
Weighted average shares outstanding (in shares)	43,213	43,343	43,508	43,321
Basic earnings per common share (in dollars per share)	$ 0.37	$ 0.28	$ 0.89	$ 0.83
Diluted earnings per common share:
Net income	$ 16,188	$ 12,090	$ 38,827	$ 35,764
Weighted average shares outstanding (in shares)	43,213	43,343	43,508	43,321
Effect of dilution from common stock equivalents (in shares)	751	1,127	887	1,090
Diluted weighted average shares outstanding (in shares)	43,964	44,470	44,395	44,411
Diluted earnings per share (in dollars shares)	$ 0.37	$ 0.27	$ 0.87	$ 0.81