STOCK-BASED COMPENSATION - Total Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax stock-based compensation expense	$ 1,686	$ 1,494	$ 2,967	$ 2,877
Less: income tax effect	(658)	(583)	(1,157)	(1,122)
Net stock-based compensation expense	1,028	911	1,810	1,755
Unrecognized compensation cost related to non-vested stock-based compensation arrangements	14,100		$ 14,100
Period for recognition for which unrecognized compensation costs are expected to be recognized			2 years 5 months
Costs of sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax stock-based compensation expense	425	374	$ 743	773
Operating expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Pre-tax stock-based compensation expense	$ 1,261	$ 1,120	$ 2,224	$ 2,104