SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 8) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long term debt unamortized issuance costs	$ 4,500	$ 4,800
Other Assets	51,854	47,399
Long-term debt, less current maturities	531,745	508,002
Current maturities of long-term debt	$ 26,208	6,043
As Reported on Form 10-K
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Assets		52,241
Long-term debt, less current maturities		512,287
Current maturities of long-term debt		6,600
Decrease from Retrospective Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Assets		(4,842)
Long-term debt, less current maturities		(4,285)
Current maturities of long-term debt		(557)
Accounting Standards Update 2015-03 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other Assets		47,399
Long-term debt, less current maturities		508,002
Current maturities of long-term debt		$ 6,043