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STOCK-BASED COMPENSATION (Details) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentages of vesting for one year (in hundredths) 100.00%    
Percentages of vesting for three years (in hundredths) 33.30%    
Percentages of vesting for five years (in hundredths) 20.00%    
Percentages of vesting for ten years (in hundredths) 10.00%    
Weighted Average Grant Price [Roll Forward]      
Stock compensation expense $ 1,557 $ 1,732  
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting rights The shares of restricted stock granted to employees and that are outstanding as of June 30, 2015 vest in accordance with one of the following vesting schedules: 100% one year after date of grant; 33.3% each year for three years after date of grant; 20% each year for five years after the grant date; or 10% each year for ten years after the grant date.    
Numerator used for calculating the number of whole shares granted $ 75    
Award vesting period 1 year    
Number of shares granted (in shares) (13,000)    
Number of shares forfeited (in shares) 8,643    
Weighted-average grant price of granted shares (in dollars per share) $ 46.08    
Restricted Stock [Roll Forward]      
Non-vested, beginning balance (in shares) 179,942    
Granted (in shares) 13,000    
Forfeited (in shares) (8,643)    
Vested (in shares) 50,694    
Non-vested, ending balance (in shares) 133,605    
Weighted Average Grant Price [Roll Forward]      
Non-vested, beginning balance (in dollars per share) $ 52.71    
Granted (in dollars per share) 46.08    
Forfeitures (in dollars per share) 62.76    
Vested (in dollars per share) 44.65    
Non-vested, ending balance (in dollars per share) $ 54.48    
Stock compensation expense $ 1,600 $ 1,700  
Related income tax benefits recognized 600    
Unrecognized compensation expense $ 5,900   $ 6,900
Compensation cost not yet recognized, Period for recognition 28 months 27 days    
Restricted Stock Plan [Member] | Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized for grants (in shares) 800,000    
Number of shares granted (in shares) (850,378)    
Number of shares forfeited (in shares) 131,664    
Number of shares available for future grants (in shares) 81,286    
Weighted-average grant price of granted shares (in dollars per share) $ 28.11    
Restricted Stock [Roll Forward]      
Granted (in shares) 850,378    
Forfeited (in shares) (131,664)    
Weighted Average Grant Price [Roll Forward]      
Granted (in dollars per share) $ 28.11