Investment in Unconsolidated and Consolidated Joint Ventures - Investment Information (Details) (USD $)	12 Months Ended				12 Months Ended						12 Months Ended				3 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2013 joint_venture	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Line of Credit	Dec. 31, 2013 Petro Travel Plaza Holdings LLC	Dec. 31, 2012 Petro Travel Plaza Holdings LLC	Dec. 31, 2013 Tejon Mountain Village LLC	Dec. 31, 2012 Tejon Mountain Village LLC	Dec. 31, 2013 Rockefeller Joint Ventures acre joint_venture	Jun. 30, 2013 Rockefeller Joint Ventures	Dec. 31, 2013 Five West Parcel LLC sqft	Dec. 31, 2012 Five West Parcel LLC	Dec. 31, 2013 18-19 West LLC acre	Dec. 31, 2012 18-19 West LLC	Jun. 30, 2013 TRCC-East [Member] acre	Jun. 30, 2012 TRCC-East [Member]	Dec. 31, 2013 TRCC/Rock Outlet Center	Jun. 30, 2013 TRCC/Rock Outlet Center	Dec. 31, 2013 Centennial Founders, LLC	Dec. 31, 2012 Centennial Founders, LLC	Dec. 31, 2013 SERP	Dec. 31, 2012 SERP	Dec. 31, 2011 SERP
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated joint ventures	$ 62,604,000	$ 54,022,000								$ 335,000					$ 86,000,000			$ 0
Equity in earnings (losses)	4,006,000	2,535,000	916,000		3,925,000	2,661,000	(59,000)	(42,000)			13,000	(120,000)	27,000	36,000			100,000		0	0
Unconsolidated joint ventures, ownership interest					60.00%		50.00%				50.00%		50.00%
Unconsolidated joint ventures, voiting rights					50.00%
Number of joint venture contracts	3								2
Number of acres for development									91						326,000.0
Development of land in TRCC including pursuing Foreign Trade Zone									500
Consolidated joint venture, ownership interest																			72.83%
Area of building owned and leased											606,000
Long-term Debt					(16,602,000)	(17,358,000)	0	0			(11,000,000)	(11,000,000)	0	0			0		0	0
Number of acres for development													61.5
Rate of increase in future compensation levels																					3.50%	3.50%	3.50%
Investment in unconsolidated joint ventures					11,513,000		43,873,000		7,218,000									10,558,000
Equity Method Investment, Aggregate Cost																2,159,000
Line of Credit Facility, Maximum Borrowing Capacity				$ 52,000,000