Notes Payable, Revolving Credit Facility, Interest and Amortization of Deferred Debt Costs - Scheduled Maturities of Debt, Including Scheduled Principal Amortization (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014
Balloon Payments
October 1 through December 31, 2014	$ 0
2015	14,885
2016	28,879
2017	0
2018	57,748
2019	60,793
Thereafter	423,067
Balloon Payments, Total	585,372
Scheduled Principal Amortization
October 1 through December 31, 2014	5,651
2015	23,200
2016	23,496
2017	24,679
2018	24,821
2019	23,489
Thereafter	135,757
Principal Amortization, Total	261,093
Total
October 1 through December 31, 2014	5,651
2015	38,085
2016	52,375
2017	24,679
2018	82,569
2019	84,282
Thereafter	558,824
Total	$ 846,465