REVENUE RECOGNITION - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended
	Apr. 01, 2018	Jun. 30, 2018	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Retained earnings	$ 430,642	$ 368,138	$ 396,493
Capitalized contract cost	7,100	6,100
Deferred tax liability	159,462	143,542	151,563
Deferred revenue	361,855	328,656
Unrecognized accounts receivable and deferred revenue		18,700	$ 20,000
Capitalized contract cost, amortization		600
Accounting Standards Update 2014-09
Disaggregation of Revenue [Line Items]
Revenue will not be recognized in future periods	34,900
Effect of Change Higher (Lower) | Accounting Standards Update 2014-09
Disaggregation of Revenue [Line Items]
Retained earnings	34,149	33,271
Deferred tax liability	$ 7,899	7,628
Prepaid expenses and other current assets
Disaggregation of Revenue [Line Items]
Capitalized contract cost		3,900
Other assets
Disaggregation of Revenue [Line Items]
Capitalized contract cost		$ 2,200
Minimum
Disaggregation of Revenue [Line Items]
Payment terms		30 days
Maximum
Disaggregation of Revenue [Line Items]
Payment terms		90 days