Aggregate Contractual Maturities of Indebtedness by Year (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Extinguishment Of Debt [Line Items]
Total	$ 958,182	$ 1,419,653
Recourse Indebtedness
Extinguishment Of Debt [Line Items]
2019	77,908
Thereafter	169,188
Total	247,096	313,700
Non Recourse Indebtedness
Extinguishment Of Debt [Line Items]
2018	358
2019	749
2020	779
2021	39,196
Thereafter	670,004
Total	$ 711,086	$ 1,065,123

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 of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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