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STOCK-BASED COMPENSATION (Stock Award Plans) (Details) - shares
1 Months Ended 12 Months Ended 84 Months Ended 132 Months Ended
May. 31, 2014
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]        
Number of option awards exercised (in shares)   193,088    
Restricted Stock Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]        
Number of restricted stock awards vested (in shares)   8,729    
Employee Stock Award Plan-2008 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of option awards vest and exercisable in installments   20.00%    
Award expiration term   10 years    
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]        
Beginning balance (in shares)   1,646,947 1,900,000  
Additional shares authorized 1,500,000 0 1,500,000  
Number of awards granted (in shares)   (366,419) (2,362,928)  
Number of awards forfeited or expired (in shares)   114,050 357,506  
Ending balance (in shares)   1,394,578 1,394,578 1,394,578
Employee Stock Award Plan-2008 [Member] | Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]        
Number of option awards exercised (in shares)   182,956 650,519  
Employee Stock Award Plan-2008 [Member] | Unrestricted Stock Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]        
Number of awards granted (in shares)   (1,065) (6,345)  
Employee Stock Award Plan-2008 [Member] | Restricted Stock Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period of restricted stock awards   5 years    
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]        
Number of restricted stock awards vested (in shares)   0 18,576  
Director Plan - 2005 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]        
Beginning balance (in shares)   87,194   300,000
Number of awards granted (in shares)   (17,256)   (236,065)
Number of awards forfeited or expired (in shares)   0   6,003
Ending balance (in shares)   69,938 69,938 69,938
Director Plan - 2005 [Member] | Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]        
Number of option awards exercised (in shares)   10,132   14,807
Director Plan - 2005 [Member] | Restricted Stock Awards [Member]        
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]        
Number of restricted stock awards vested (in shares)   8,729   20,171