Summary of Unaudited Pro Forma Financial Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011		Dec. 31, 2010
Business Acquisition, Pro Forma Information [Line Items]
Total revenue	$ 63,120	$ 60,766	$ 56,131	$ 55,449	$ 53,838	$ 54,370	$ 49,318	$ 45,259	$ 235,466	$ 202,785		$ 117,748
Total operating expenses									163,560	146,442		75,326
Operating income (loss)	20,247	18,206	16,641	16,812	14,182	14,427	12,969	14,765	71,906	56,343		42,422
Net income (loss)	41,821	4,285	2,624	2,871	655	4,618	455	13,596	51,601	19,324		2,174
Pro Forma
Business Acquisition, Pro Forma Information [Line Items]
Total revenue									244,884	232,341
Total operating expenses									173,858	174,292
Operating income (loss)									71,010	58,049
Net income (loss)									$ 49,303	$ (28,626)	[1]

[1] The net loss for the year ended December 31, 2011 includes one-time expenses for the early extinguishment of debt and loan transfer and consent fees but excludes the gain on acquisition of the controlling interests in the Solana Beach Centre entities and the Waikiki Beach Walk entities.