LEASES (Effect of Changes Made to the Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other long-term assets	$ 159,520	$ 187,284	$ 118,182
Accrued and other liabilities		138,496	121,878
Other long-term liabilities	$ 100,093	106,597	$ 54,113
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other long-term assets		69,102
Accrued and other liabilities		16,618
Other long-term liabilities		$ 52,484