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STOCKHOLDERS' EQUITY, Authorized Stock and Restricted Stock Plan (Details) - USD ($)
3 Months Ended 9 Months Ended
Jul. 31, 2020
Jul. 31, 2019
Jul. 31, 2020
Jul. 31, 2019
Oct. 31, 2019
Authorized Stock [Abstract]          
Shares authorized (in shares) 200,000,000   200,000,000    
Excess stock, shares authorized (in shares) 20,000,000   20,000,000   20,000,000
Preferred Stock, shares authorized (in shares) 50,000,000   50,000,000    
Common Stock [Member]          
Authorized Stock [Abstract]          
Common stock, shares authorized (in shares) 30,000,000   30,000,000    
Class A Common Stock [Member]          
Authorized Stock [Abstract]          
Common stock, shares authorized (in shares) 100,000,000   100,000,000    
Restricted Stock [Member]          
Non-vested shares, weighted-average grant-date fair value [Roll forward]          
Unamortized restricted stock compensation $ 13,700,000   $ 13,700,000    
Weighted average period for recognizing unamortized expense     4 years 10 months 24 days    
Total amounts charged to compensation expense $ 1,003,000 $ 1,077,000 $ 4,518,000 $ 3,191,000  
Allocated Share Based Payment Related to Former Chairman     $ 1,400,000    
Restricted Stock [Member] | Common Stock [Member]          
Restricted Stock Plan [Abstract]          
Number of shares awarded (in shares)     105,450    
Non-vest shares, number of shares [Roll forward]          
Non-vested, beginning of period (in shares)     1,146,100    
Granted (in shares)     105,450    
Vested (in shares)     (327,000)    
Forfeited (in shares)     0    
Non-vested at July 31, 2020 924,550   924,550    
Non-vested shares, weighted-average grant-date fair value [Roll forward]          
Non-vested, beginning of period (in dollars per share)     $ 17.52    
Granted (in dollars per share)     19.59    
Vested (in dollars per share)     17.71    
Forfeited (in dollars per share)     0    
Non-vested, end of period (in dollars per share) $ 17.69   $ 17.69    
Restricted Stock [Member] | Class A Common Stock [Member]          
Restricted Stock Plan [Abstract]          
Number of shares awarded (in shares)     120,800    
Non-vest shares, number of shares [Roll forward]          
Non-vested, beginning of period (in shares)     463,225    
Granted (in shares)     120,800    
Vested (in shares)     (92,375)    
Forfeited (in shares)     (500)    
Non-vested at July 31, 2020 491,150   491,150    
Non-vested shares, weighted-average grant-date fair value [Roll forward]          
Non-vested, beginning of period (in dollars per share)     $ 21.07    
Granted (in dollars per share)     23.96    
Vested (in dollars per share)     22.20    
Forfeited (in dollars per share)     23.96    
Non-vested, end of period (in dollars per share) $ 21.56   $ 21.56    
Restricted Stock Plan [Member] | Class A Common Shares or Common Shares [Member]          
Restricted Stock Plan [Abstract]          
Number of shares authorized (in shares) 5,500,000   5,500,000    
Restricted Stock Plan [Member] | Restricted Stock [Member] | Common Stock [Member]          
Restricted Stock Plan [Abstract]          
Number of shares authorized (in shares) 350,000   350,000    
Restricted Stock Plan [Member] | Restricted Stock [Member] | Class A Common Stock [Member]          
Restricted Stock Plan [Abstract]          
Number of shares authorized (in shares) 350,000   350,000    
Restricted Stock Plan [Member] | Restricted Stock [Member] | Class A Common Shares or Common Shares [Member]          
Restricted Stock Plan [Abstract]          
Number of shares authorized (in shares) 4,800,000   4,800,000    
Grant date fair value     $ 5,000,000.0