XML 165 R145.htm IDEA: XBRL DOCUMENT v3.3.1.900
EMPLOYEE STOCK COMPENSATION - Nonvested Stock Option Activity (Detail) - $ / shares
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Number of Shares      
Outstanding at beginning of year (in shares) 552,672 419,569 266,668
Granted (in shares) 193,696 231,016 389,569
Vested (in shares) (170,102) (97,913) (93,334)
Forfeited (in shares) (10,000) 0 (143,334)
Outstanding at end of year (in shares) 566,266 552,672 419,569
Weighted- Average Exercise Price per Share      
Outstanding at beginning of year (in dollars per share) $ 12.74 $ 13.16 $ 11.70
Granted (in dollars per share) 13.28 12.05 13.72
Vested (in dollars per share) 12.57 12.94 11.68
Forfeited (in dollars per share) 12.03 0.00 12.95
Outstanding at end of year (in dollars per share) $ 12.99 $ 12.74 $ 13.16