Aggregate Carrying Amount and Major Classifications of Consolidated Assets and Liabilities (Detail) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Variable Interest Entity [Line Items]
Real estate investment properties, net		$ 2,466,993	$ 2,451,538
Real estate under development, including land		97,164	62,521
Intangibles, net		131,502	172,452
Cash		58,517	68,922	$ 91,355	$ 44,209
Deferred rent and lease incentives		36,325	23,477
Other assets		24,470	23,334
Restricted cash		12,721	10,287
Mortgages and other notes payable, net		936,723	831,825
Other liabilities		38,946	41,938
Due to related parties	[1]	3,465	1,803
VIEs
Variable Interest Entity [Line Items]
Real estate investment properties, net		112,929	103,691
Real estate under development, including land		80,473	58,994
Intangibles, net		2,891	4,015
Cash		916	3,904
Deferred rent and lease incentives		3,061	3,096
Other assets		1,130	1,000
Restricted cash		20	974
Mortgages and other notes payable, net		104,890	85,093
Accounts payable and accrued liabilities		1,461	743
Accrued development costs		15,369	10,669
Other liabilities		976	1,387
Due to related parties		$ 107	$ 136

[1] Amounts are recorded as due to related parties in the accompanying consolidated balance sheets.