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SHARE-BASED COMPENSATION PLANS (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation [Abstract]      
Employee Stock Purchase Plan $ 1,207 $ 1,184 $ 1,279
Performance Share Units 4,340 3,910 4,349
Restricted Share Units 4,931 3,426 3,015
Other share-based payments 1,094 958 830
Total share-based compensation expense before income taxes $ 11,572 $ 9,478 $ 9,473