Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Deferred Costs, Capitalized and Other Assets Disclosure [Line Items]
Leasing commissions, net of accumulated amortization of $17,882 and $16,829, respectively	$ 18,191	$ 18,329
Acquired above market leases, net	10,418	11,483
Acquired in-place leases, net	31,543	34,308
Lease incentives, net of accumulated amortization of $2,313 and $2,220, respectively	1,388	1,480
Other intangible assets, net of accumulated amortization of $4,316 and $4,239, respectively	873	960
Debt issuance costs, net of accumulated amortization of $2,629 and $2,374, respectively	3,396	3,651
Prepaid expenses and other	3,622	3,459
Total other assets	$ 69,431	$ 73,670