Long-Term Debt (Details Textual) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Unsecured Debt, Current		$ 24,700
Capital Lease Obligations, Noncurrent	$ 67,445	51,665
U.K. Working Capital Loan [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	0
Long-term Debt (Textual)
Total borrowings	22,000
Long-term Debt, Current Maturities	2,200
Additional Borrowings	22,300
5.00% Senior Note [Member]
Long-term Debt (Textual)
Note agreement with a third party financial institution	$ 550,000	550,000
Debt Instrument, Interest Rate, Stated Percentage	5.00%
Long-term Debt, Fair Value	$ 555,700	567,900
5.25% Senior Note [Member]
Long-term Debt (Textual)
Note agreement with a third party financial institution	$ 300,000	300,000
Debt Instrument, Interest Rate, Stated Percentage	5.25%
Long-term Debt, Fair Value	$ 300,000	310,900
Real Estate Related and Other Long Term Debt [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	5,100
Long-term Debt (Textual)
Note agreement with a third party financial institution	$ 442,900
Number of loans as per loan agreements	60
Total borrowings	$ 379,700
Long-term Debt, Current Maturities	41,400
Proceeds from Issuance of Long-term Debt	34,800
Long-term Debt, Percentage Bearing Fixed Interest, Amount	85,000	86,800
Long-term Debt, Percentage Bearing Fixed Interest, Fair Value	91,000	$ 92,900
U.K. Notes [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 6,600
Long-term Debt (Textual)
Maturity date of notes	Sep. 01, 2034
Number of loans as per loan agreements	0
Total borrowings	$ 87,600
Long-term Debt, Current Maturities	8,400
Proceeds from Issuance of Long-term Debt	12,100
Brazil Note [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	100
Long-term Debt (Textual)
Total borrowings	3,100
Long-term Debt, Current Maturities	400
Proceeds from Issuance of Long-term Debt	0
Brazilian third party financial institution [Member]
Long-term Debt (Textual)
Total borrowings	6,700
Proceeds from Issuance of Long-term Debt	$ 0

Additional borrowings.

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Long-term Debt, Percentage Bearing Fixed Interest, Fair Value

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No definition available.

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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 and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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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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No definition available.

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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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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

No definition available.

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- Definition

Indicates the number of mortgages under each classification.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Carrying value as of the balance sheet date of the portion of long-term, uncollateralized debt obligations due within one year or the normal operating cycle, if longer.

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