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SHARE-BASED COMPENSATION PLANS - Summary of Nonvested Restricted Shares Activity (Details) - 2011 Incentive Stock Plan - Restricted Stock
12 Months Ended
Dec. 31, 2016
$ / shares
shares
Shares  
Nonvested shares, beginning of year (in shares) | shares 197,381
Granted (in shares) | shares 60,545
Forfeited (in shares) | shares (18,089)
Vested (in shares) | shares (12,500)
Nonvested shares, at end of year (in shares) | shares 227,337
Weighted Average Grant Date Fair Value  
Nonvested shares, beginning of year (in dollars per share) | $ / shares $ 16.17
Granted (in dollars per share) | $ / shares 18.81
Forfeited (in dollars per share) | $ / shares 16.19
Vested (in dollars per share) | $ / shares 15.97
Nonvested shares, at end of year (in dollars per share) | $ / shares $ 16.88