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SHARE-BASED COMPENSATION PLANS - Schedule of Information Pertaining to Options Outstanding and Exercisable (Detail) - 2011 Incentive Stock Plan - Employee Stock Option
12 Months Ended
Dec. 31, 2017
$ / shares
shares
$21.14 - $24.99  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices, Minimum (in usd per share) $ 21.14
Range of Exercise Prices, Maximum (in usd per share) $ 24.99
Number Outstanding and Exercisable (in shares) | shares 33,699
Weighted Average Remaining Contractual Life (Years) 2 years 4 months 10 days
Weighted Average Exercise Price (in dollars per share) $ 21.49
$25.00 - $29.99  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices, Minimum (in usd per share) 25.00
Range of Exercise Prices, Maximum (in usd per share) $ 29.99
Number Outstanding and Exercisable (in shares) | shares 2,792
Weighted Average Remaining Contractual Life (Years) 2 years 3 months
Weighted Average Exercise Price (in dollars per share) $ 25.76
$30.00 - $34.99  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices, Minimum (in usd per share) 30.00
Range of Exercise Prices, Maximum (in usd per share) $ 34.99
Number Outstanding and Exercisable (in shares) | shares 15,744
Weighted Average Remaining Contractual Life (Years) 5 months 19 days
Weighted Average Exercise Price (in dollars per share) $ 30.10
$35.00 - $37.59  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices, Minimum (in usd per share) 35.00
Range of Exercise Prices, Maximum (in usd per share) $ 37.59
Number Outstanding and Exercisable (in shares) | shares 7,348
Weighted Average Remaining Contractual Life (Years) 1 year 6 months 7 days
Weighted Average Exercise Price (in dollars per share) $ 37.08
$21.14 - $37.59  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices, Minimum (in usd per share) 21.14
Range of Exercise Prices, Maximum (in usd per share) $ 37.59
Number Outstanding and Exercisable (in shares) | shares 59,583
Weighted Average Remaining Contractual Life (Years) 1 year 9 months
Weighted Average Exercise Price (in dollars per share) $ 25.89