XML 171 R90.htm IDEA: XBRL DOCUMENT v3.8.0.1
STOCK OPTIONS AND AWARDS (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2017
USD ($)
$ / shares
shares
Dec. 31, 2016
USD ($)
$ / shares
shares
Dec. 31, 2015
USD ($)
$ / shares
shares
Dec. 31, 2017
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation | $ $ 5,446 $ 5,354 $ 4,049  
Total unrecognized compensation cost | $       $ 5,500
Unrecognized compensation cost, period for recognition (in years) 1 year 330 days      
Number of plans       3
Share-based Compensation Arrangement by Share-based Payment Award, Option Term 10 years      
Options outstanding at end of year 113,307 113,307   11,800
Number of Shares Available for Grant       2,154,251
Activity for stock option plan [Roll Forward]        
Outstanding at beginning of year (in shares) 113,307      
Granted (in shares) 0 0 0  
Exercised (in shares) (101,507)      
Forfeited or expired (in shares) 0      
Outstanding at end of year (in shares) 11,800 113,307    
Exercised (in shares)       11,800
Weighted average exercise price, outstanding at beginning of year (in dollars per share) | $ / shares $ 12.08      
Weighted average exercise price, granted (in dollars per share) | $ / shares 0.00      
Weighted average exercise price, exercised (in dollars per share) | $ / shares 12.13      
Weighted average exercise price, forfeited or expired (in dollars per share) | $ / shares 0.00      
Weighted average exercise price, outstanding at end of year (in dollars per share) | $ / shares $ 11.64 $ 12.08    
Weighted average exercise price, Exercisable (in dollars per share) | $ / shares       $ 11.64
Weighted average remaining contractual term, outstanding at end of year (in years) 44 days      
Weighted average remaining contractual life, exercisable at end of year (in years) 44 days      
Aggregate intrinsic value, outstanding at end of year | $       $ 174
Aggregate intrinsic value, exercisable at end of year | $       $ 174
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]        
Total intrinsic value of options exercised | $ $ 1,533 $ 661 $ 492  
Proceeds from exercise of stock options | $ 341 801 744  
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options | $ 1,991 1,958 1,488  
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vested in period, total fair value | $ $ 5,600 $ 4,400 $ 3,800  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Number of shares nonvested at beginning of year 648,817 643,641 494,452  
Number of shares granted 234,529 317,695 439,674  
Number of shares vested (307,825) (263,713) (227,905)  
Number of shares forfeited (107,149) (48,806) (62,580)  
Number of shares nonvested at end of year 468,372 648,817 643,641  
Weighted average of shares fair value, nonvested at beginning of year | $ / shares $ 17.82 $ 17.21 $ 16.43  
Weighted average of shares fair value granted | $ / shares 27.36 18.13 17.65  
Weighted average of shares fair value vested | $ / shares 18.12 16.82 16.45  
Weighted average of shares fair value forfeited | $ / shares 21.18 17.37 16.58  
Weighted average of shares fair value, nonvested at end of year | $ / shares $ 21.63 $ 17.82 $ 17.21  
1999 Stock Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized       7,507,500
Award vesting rights (as a percent) 25.00%      
2012 Stock Plan [Member] [Domain]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized       0