Commitments and Contingencies - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended	12 Months Ended	0 Months Ended
	Jul. 10, 2013	Dec. 31, 2013	Apr. 17, 2013	Aug. 30, 2013	Sep. 26, 2013	Dec. 31, 2010 integer	Dec. 14, 2011	Apr. 15, 2014	Jun. 30, 2009	Jun. 10, 2009	Dec. 04, 2014
San Rafael
Loss Contingencies [Line Items]
Damages paid	$ 1,270,000	$ 1,400,000
San Rafael | Attorney Fees
Loss Contingencies [Line Items]
Damages sought			1,250,000
Damages paid				80,000
City of Santee
Loss Contingencies [Line Items]
One-time rent increase					2.50%
Annual rent increase, percentage of CPI					100.00%
Rent increase upon turnover of site					10.00%
Annual rent increase, percentage of CPI, prior to settlement					70.00%
Colony Park
Loss Contingencies [Line Items]
Loss contingency damages sought by plaintiff						6,800,000
Number of claims settled						6
Number of plaintiffs						72
Number of dismissed claims						66
Number of claims dismissed and not appealed						3
Colony Park | Maximum
Loss Contingencies [Line Items]
Jury imposed compensatory damages						44,000
Colony Park | Attorney Fees
Loss Contingencies [Line Items]
Compensatory damages sought							2,000,000
Compensatory Damages
Loss Contingencies [Line Items]
Damages awarded								15,300,000
Damages sought but overturned											15,300,000
Punitive Damages
Loss Contingencies [Line Items]
Damages awarded								95,800,000
Damages sought but overturned											95,800,000
Settled Litigation | Attorney Fees | California Rent Control Litigation
Loss Contingencies [Line Items]
Damages sought										$ 2,100,000
Rent control ordinance expiration period									10 years