DEBT (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Long-term Debt	$ 490,000	$ 94,000
Debt issue costs	(4,000)	(6,000)
Less current maturities	490,000	0
Long-term Debt, Excluding Current Maturities	0	94,000
Term Loan [Member]
Long-term Debt	100,000	100,000
Less current maturities	100,000
Capex Borrowing [Member]
Long-term Debt	$ 394,000	$ 0

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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