Quarterly report pursuant to Section 13 or 15(d)

Share Repurchase Plan - Additional Information (Detail)

v3.23.1
Share Repurchase Plan - Additional Information (Detail) - $ / shares
3 Months Ended 135 Months Ended
Feb. 28, 2023
Feb. 28, 2023
Feb. 28, 2022
Feb. 28, 2023
Nov. 30, 2022
Oct. 06, 2016
Apr. 08, 2015
Jun. 06, 2012
Dec. 31, 2011
Equity, Class of Treasury Stock [Line Items]                  
Number of shares authorized to repurchase           8,000,000 6,000,000 3,000,000 1,000,000
Share repurchase plan   open market purchases, privately negotiated block trades, unsolicited negotiated transactions, and/or pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities and Exchange Commission              
Treasury stock, shares 6,404,771 6,404,771   6,404,771 6,347,490        
Common Stock [Member]                  
Equity, Class of Treasury Stock [Line Items]                  
Treasury stock, shares 6,404,771 6,404,771   6,404,771          
Repurchase agreement, purchase price per share $ 3.37 $ 4.25 $ 10.85 $ 3.57          
Number of shares repurchased 139,626 57,281 76,428