Debt Facilities - Mortgage and Loans Payable (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long term debt, gross	$ 1,405,798	$ 1,466,224
Less the amount representing debt discount and debt issuance cost	(6,959)	(10,666)
Add amount representing unamortized mortgage premium	1,926	2,051
Loans payable current and non current	1,400,765	1,457,609
Less current portion	(73,288)	(64,491)
Loans payable, noncurrent	1,327,477	1,393,118
Term loans [Member]
Debt Instrument [Line Items]
Long term debt, gross	1,360,722	1,417,352
Mortgage payable and other loans payable [Member]
Debt Instrument [Line Items]
Long term debt, gross	$ 45,076	$ 48,872

Debt instrument unamortized discount and debt issuance costs.

No definition available.

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- Definition

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.

+ References

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- Definition

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.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt premium.

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- Definition

Carrying value as of the balance sheet date of portion of long-term loans payable due within one year or the operating cycle if longer.

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- Definition

Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of all notes and loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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