Annual report pursuant to Section 13 and 15(d)

Share Repurchase Plan - Additional Information (Detail)

v3.22.0.1
Share Repurchase Plan - Additional Information (Detail) - $ / shares
12 Months Ended 120 Months Ended
Feb. 14, 2022
Nov. 30, 2021
Nov. 30, 2020
Nov. 30, 2021
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   6,113,956 6,093,535 6,113,956        
Common Stock [Member]                
Equity, Class of Treasury Stock [Line Items]                
Treasury stock, shares   6,113,956   6,113,956        
Repurchase agreement, purchase price per share   $ 12.21 $ 0.00 $ 3.40        
Number of shares repurchased   20,421 0          
Common Stock [Member] | Subsequent Event [Member]                
Equity, Class of Treasury Stock [Line Items]                
Repurchase agreement, purchase price per share $ 11.10              
Number of shares repurchased 64,708