LEASES - Effect of Changes Made to the Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred taxes and other long-term assets	$ 159,022	$ 187,284	$ 118,182
Accrued liabilities	196,527	138,496	121,878
Other long-term liabilities	$ 109,646	106,597	$ 54,113
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred taxes and other long-term assets		69,102
Accrued liabilities		16,618
Other long-term liabilities		$ 52,484