DEBT (Schedule of Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument
Long-term debt	$ 262,900
Capital leases	100	$ 100
Less: unamortized debt issuance costs	(300)	(300)
Total debt and capital leases	262,700	226,100
Less: current maturities	(167,803)	(100,453)
Long-term debt	94,920	125,596
Tax increment financing debt
Debt Instrument
Long-term debt	20,300	20,800
Line of Credit
Debt Instrument
Long-term debt	133,800	67,000
Foreign subsidiary debt
Debt Instrument
Long-term debt	3,800	3,500
Prudential
Debt Instrument
Long-term debt	30,000	60,000
New York Life Investors LLC
Debt Instrument
Long-term debt	$ 75,000	$ 75,000

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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