DEBT (Schedule of Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument
Long-term debt	$ 226,300
Capital leases	100	$ 100
Less: unamortized debt issuance costs	(300)	(300)
Total debt and capital leases	226,100	190,200
Less current maturities	(100,453)	(33,715)
Long-term debt	125,596	156,544
Tax increment financing debt
Debt Instrument
Long-term debt	20,800	21,800
Foreign subsidiary debt
Debt Instrument
Long-term debt	3,500	3,600
New York Life Investors LLC
Debt Instrument
Long-term debt	75,000	75,000
Prudential
Debt Instrument
Long-term debt	60,000	90,000
Credit Agreement
Debt Instrument
Long-term debt	$ 67,000	$ 0

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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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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 of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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