STOCK-BASED COMPENSATION - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.7	$ 1.0
Share-based compensation expense, net of tax	$ 0.5	$ 0.8
Shares awarded (in shares)	120,019
Weighted average exercise price (in dollars per share)	$ 43.28
Award vesting rights	25.00%
Exercisable period	1 year
Expiration period	7 years
Stock Incentive Plan 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)	1,500,000
Shares available for future grants (in shares)	1,220,034
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.1
RSUs awarded (in shares)	13,224
RSU granted (in dollars per share)	$ 43.28
Award vesting period	2 years
Compensation not yet recognized, Share-based awards other than options	$ 0.6
Restricted Stock Units (RSUs) | Associates
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.5
RSUs awarded (in shares)	53,669
RSU granted (in dollars per share)	$ 43.28
Award vesting period	4 years
Compensation not yet recognized, Share-based awards other than options	$ 4.6
Weighted average remaining contractual terms	3 years 2 months 20 days
Non-vested Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.1
Compensation not yet recognized	$ 2.0
Compensation cost not yet recognized, period for recognition	3 years 4 months 10 days