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STOCK COMPENSATION - Options Outstanding and Exercisable (Details)
3 Months Ended
Mar. 31, 2019
$ / shares
shares
Exercise Price Range One  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercise price range, number of outstanding options | shares 471,075
Weighted average remaining contractual term (in years) 3 years 9 months 25 days
Exercise price range, outstanding options, weighted average exercise price $ 37.57
Exercise price range, number of exercisable options | shares 471,075
Exercise price range, exercisable options, weighted average remaining contractual term (in years) 3 years 9 months 25 days
Exercise price range, exercisable options, weighted average exercise price $ 37.57
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercise price range, exercisable options, weighted average exercise price 25.45
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercise price range, exercisable options, weighted average exercise price $ 42.16