DEBT (Schedule of Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument
Long-term debt	$ 278,200
Capital leases	100	$ 100
Less: unamortized debt issuance costs	(300)	(300)
Total debt and capital leases	278,000	226,100
Less: current maturities	(152,945)	(100,453)
Long-term debt	125,076	125,596
Tax increment financing debt
Debt Instrument
Long-term debt	20,300	20,800
Line of Credit
Debt Instrument
Long-term debt	118,800	67,000
Foreign subsidiary debt
Debt Instrument
Long-term debt	4,100	3,500
Prudential
Debt Instrument
Long-term debt	60,000	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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-Name Accounting Standards Codification
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Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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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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