XML 83 R66.htm IDEA: XBRL DOCUMENT v3.3.1.900
STOCK PLANS (Non-Vested Stock Option Activity) (Details) - Stock options - $ / shares
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Stock Plans      
Balance of Nonvested Options (in shares) 387,222 268,975  
Options granted 323,130 5,121 273,105
Vested (in shares) (189,681)    
Forfeited (in shares) (15,202)    
Nonvested stock options, Weighted Average Fair Value at Grant Date      
Balance at beginning of year, weighted average fair value at grant date (in dollars per share) $ 17.48    
Granted, weighted average fair value at grant date (in dollars per share) 16.35 $ 17.52 $ 18.14
Vested, weighted average fair value at grant date (in dollars per share) 17.26    
Forfeited, weighted average fair value at grant date (in dollars per share) 17.15    
Balance at end of year, weighted average fair value at grant date (in dollars per share) $ 16.66 $ 17.48