XML 117 R97.htm IDEA: XBRL DOCUMENT v3.19.1
STOCK OPTIONS - Narrative (Details) - USD ($)
8 Months Ended 12 Months Ended
Aug. 24, 2018
Jan. 05, 2018
Mar. 24, 2017
Aug. 27, 2015
Aug. 24, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Granted (in shares) 149,700 25,000 70,000 38,750 174,700 174,700 70,000 0  
Granted (in dollars per share)     $ 44.21 $ 42.03   $ 45.87 $ 44.21 $ 0.00  
Expiration period (in years)       10 years          
Vesting period (in years)       5 years          
Options outstanding (in shares)       23,500   263,700 93,500 26,500 34,750
Allocated share-based compensation expense           $ 486,000 $ 29,000 $ 19,000  
Employee Stock Option                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Expiration period (in years)     10 years     10 years      
Nonvested awards, compensation cost not yet recognized           $ 1,685,000      
Period for recognition (in years)           3 years 8 months 8 days      
Tranche One                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Granted (in shares) 50,200 12,500 46,250   62,700   46,250    
Granted (in dollars per share) $ 46.00 $ 45.11 $ 44.21            
Expiration period (in years) 10 years 10 years 10 years            
Vesting period (in years) 3 years 3 years 3 years            
Options outstanding (in shares) 50,200 12,500 41,750   50,200        
Tranche One | Employee Stock Option                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Vesting period (in years)         3 years   3 years    
Tranche Two                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Granted (in shares) 99,500 12,500 23,750   112,000   23,750    
Granted (in dollars per share) $ 46.00 $ 45.11 $ 44.21            
Expiration period (in years) 10 years 10 years 10 years            
Vesting period (in years) 5 years 5 years 5 years            
Options outstanding (in shares) 99,500 12,500 23,750   99,500        
Tranche Two | Employee Stock Option                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Vesting period (in years)         5 years   5 years