FINANCIAL INFORMATION New Accounting Pronouncements Adopted (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, Plant and Equipment, Net	$ 20,918	$ 21,582
Right of use assets	36,031	0
Accrued expenses and other current liabilities	41,402	37,547
Long-term lease liabilities	33,817	0
Other long-term liabilities	$ 5,391	10,302
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, Plant and Equipment, Net		21,838
Right of use assets		37,749
Accrued expenses and other current liabilities		44,504
Long-term lease liabilities		35,694
Other long-term liabilities		5,656
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, Plant and Equipment, Net		256
Right of use assets		37,749
Accrued expenses and other current liabilities		6,957
Long-term lease liabilities		35,694
Other long-term liabilities		$ (4,646)