Investment in Unconsolidated and Consolidated Joint Ventures - Condensed Statements of Operations and Balance Sheet Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Statement of Operations
Equity in earnings (losses)	$ 438	$ 409
Balance Sheet Information
Current assets	77,625		83,244
Property and equipment, net	149,918		146,542
Unconsolidated Properties [Member]
Statement of Operations
Revenues	25,913	27,334
Net income (loss)	676	689
Partner’s share of net income (loss)	238	280
Equity in earnings (losses)	438	409
Balance Sheet Information
Current assets	20,364		117,827
Property and equipment, net	208,853		90,024
Other assets	5,380		2,807
Long-term debt	(32,609)		(27,602)
Other liabilities	(17,013)		(11,775)
Net assets	184,975		171,281
Petro Travel Plaza Holdings LLC
Statement of Operations
Revenues	25,053	26,474
Net income (loss)	998	650
Partner’s share of net income (loss)	399	260
Equity in earnings (losses)	599	390
Balance Sheet Information
Current assets	16,123		14,886
Property and equipment, net	43,956		43,897
Other assets	198		208
Long-term debt	(16,400)		(16,602)
Other liabilities	(3,028)		(2,687)
Net assets	40,849		39,702
Five West Parcel LLC
Statement of Operations
Revenues	844	846
Net income (loss)	59	55
Partner’s share of net income (loss)	30	28
Equity in earnings (losses)	29	27
Balance Sheet Information
Current assets	1,329		813
Property and equipment, net	16,452		16,980
Other assets	341		438
Long-term debt	(11,000)		(11,000)
Other liabilities	(175)		(343)
Net assets	6,947		6,888
18-19 West LLC
Statement of Operations
Revenues	16	14
Net income (loss)	5	10
Partner’s share of net income (loss)	2	5
Equity in earnings (losses)	3	5
Balance Sheet Information
Current assets	41		10
Property and equipment, net	4,527		4,514
Other assets	0		0
Long-term debt	0		0
Other liabilities	(23)		0
Net assets	4,545		4,524
TRCC/Rock Outlet Center
Statement of Operations
Revenues	0
Net income (loss)	(344)
Partner’s share of net income (loss)	(172)
Equity in earnings (losses)	(172)
Balance Sheet Information
Current assets	2,660		2,428
Property and equipment, net	43,459		24,633
Other assets	4,841		2,161
Long-term debt	(5,209)		0
Other liabilities	(13,449)		(8,577)
Net assets	32,302		20,645
Tejon Mountain Village LLC
Statement of Operations
Revenues	0	0
Net income (loss)	(42)	(26)
Partner’s share of net income (loss)	(21)	(13)
Equity in earnings (losses)	(21)	(13)
Balance Sheet Information
Current assets	211		99,690
Property and equipment, net	100,459		0
Other assets	0		0
Long-term debt	0		0
Other liabilities	(338)		(168)
Net assets	100,332		99,522
Centennial Founders, LLC
Statement of Operations
Revenues	269	158
Net income (loss)	68	51
Partner’s share of net income (loss)	18	15
Equity in earnings (losses)	0	0
Balance Sheet Information
Current assets	524		86
Property and equipment, net	75,646		74,968
Other assets	0		0
Long-term debt	0		0
Other liabilities	(477)		(204)
Net assets	$ 75,693		$ 74,850