Financing Activity (Timing of Principal Payments and Terms of Mortgage Loans) (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Total
Mortgage loans payable, net	$ 1,047,906	$ 1,056,084
Consolidated Properties [Member]
Principal Amortization
2014	18,561
2015	19,759
2016	20,685
2017	15,082
2018	8,030
2024 and thereafter	10,811
Total	92,928
Balloon Payments
2014	0
2015	27,161
2016	188,785
2017	120,046
2018	410,704
2024 and thereafter	211,346
Total	958,042
Total
2014	18,561
2015	46,920
2016	209,470
2017	425,786
2018	128,076
2024 and thereafter	222,157
Total	1,050,970
Mortgage Loan [Member]
Total
Debt Issuance Costs, Net	$ 3,064	$ 3,400

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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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