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STOCK COMPENSATION PLANS - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Nov. 01, 2016
Feb. 11, 2016
Jan. 31, 2017
Jan. 31, 2016
Oct. 31, 2016
Oct. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock based compensation expense     $ 5,685,000 $ 2,722,000    
Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock based compensation expense     $ 1,700,000 1,866,000    
Aggregate number of shares outstanding (in shares)     310,700      
Unrecognized share-based compensation costs     $ 13,400,000      
Weighted average vesting period     2 years 4 months      
Restricted Stock | Outside Directors            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares of restricted stock granted (in shares)   15,237        
Grant date fair value of restricted shares (in usd per share)   $ 88.61        
Restricted Stock | Outside Directors | Scenario One            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period   1 year        
Restricted Stock | Outside Directors | Scenario Two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period   2 years        
Restricted Stock | Outside Directors | Scenario Three            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period   3 years        
Performance Based Awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock based compensation expense     $ 3,925,000 767,000    
Service period     2 years      
Additional service period     1 year      
Management Share Purchase Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock based compensation expense     $ 60,000 89,000    
Management Share Purchase Plan | Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares issued (in shares)     3,058      
Average price per share purchased by participants (in usd per share)     $ 94.19      
Management Share Purchase Plan | Matching Restricted Shares            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares issued (in shares)     734      
Performance Share Plan 2017 | Performance Based Awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock based compensation expense     $ 0 0    
Aggregate number of shares outstanding (in shares)     0      
Potential accrued compensation cost         $ 1,000,000  
Performance Share Plan 2017 | Performance Based Awards | Officers and Key Management Employees            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock based compensation expense     $ 0      
Target number of common stock to be granted (in shares) 68,250          
Shares of restricted stock granted (in shares) 68,250          
Grant date fair value of restricted shares (in usd per share) $ 91.61          
Performance Share Plan 2016 | Performance Based Awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock based compensation expense     $ 3,291,000 0    
Aggregate number of shares outstanding (in shares)     113,084      
Potential accrued compensation cost           $ 1,400,000
Performance Share Plan 2015 | Performance Based Awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total stock based compensation expense     $ 634,000 $ 0    
Service period     3 years      
Additional service period     1 year      
Aggregate number of shares outstanding (in shares)     102,387      
Minimum | Performance Based Awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of potential performance shares received     50.00%      
Maximum | Performance Based Awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of potential performance shares received     200.00%