Financing Activity (Timing of Principal Payments and Terms of Mortgage Loans) (Detail) - Consolidated Properties [Member] $ in Thousands	Dec. 31, 2015 USD ($)
Principal Amortization
2014	$ 15,989
2015	16,244
2016	16,952
2017	17,692
2018	18,090
2021 and thereafter	52,034
Total	137,001
Balloon Payments
2014	219,480
2015	150,000
2016	116,469
2017	27,161
2018	0
2021 and thereafter	675,384
Total	1,188,494
Total
2014	235,469
2015	166,244
2016	133,421
2017	17,692
2018	45,251
2021 and thereafter	727,418
Total	$ 1,325,495