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		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Statement of Operations
Equity in earnings (losses)	$ 1,148	$ 1,270	$ 1,586	$ 1,679
Balance Sheet Information
Current assets	76,582		76,582		83,244
Property and equipment, net	154,373		154,373		146,542
Long-term debt	(14,777)		(14,777)		(4,693)
Unconsolidated Properties [Member]
Statement of Operations
Revenues			56,879	57,068
Net income (loss)			2,660	2,207
Partner’s share of net income (loss)			1,074	863
Equity in earnings (losses)			1,586	1,679
Balance Sheet Information
Current assets	20,904		20,904		117,827
Property and equipment, net	219,616		219,616		90,024
Other assets	8,575		8,575		2,807
Long-term debt	(45,673)		(45,673)		(27,602)
Other liabilities	(10,248)		(10,248)		(11,775)
Net assets	193,174		193,174		171,281
Petro Travel Plaza Holdings LLC
Statement of Operations
Revenues			54,658	55,364
Net income (loss)			2,555	2,394
Partner’s share of net income (loss)			1,021	958
Equity in earnings (losses)			1,534	1,436
Balance Sheet Information
Current assets	16,788		16,788		14,886
Property and equipment, net	44,686		44,686		43,897
Other assets	189		189		208
Long-term debt	(16,213)		(16,213)		(16,602)
Other liabilities	(3,043)		(3,043)		(2,687)
Net assets	42,407		42,407		39,702
Five West Parcel LLC
Statement of Operations
Revenues			1,710	1,673
Net income (loss)			136	47
Partner’s share of net income (loss)			68	23
Equity in earnings (losses)			68	24
Balance Sheet Information
Current assets	1,866		1,866		813
Property and equipment, net	15,924		15,924		16,980
Other assets	257		257		438
Long-term debt	(11,000)		(11,000)		(11,000)
Other liabilities	(22)		(22)		(343)
Net assets	7,025		7,025		6,888
18-19 West LLC
Statement of Operations
Revenues			31	31
Net income (loss)			19	25
Partner’s share of net income (loss)			10	12
Equity in earnings (losses)			9	13
Balance Sheet Information
Current assets	25		25		10
Property and equipment, net	4,573		4,573		4,514
Other assets	0		0		0
Long-term debt	0		0		0
Other liabilities	0		0		0
Net assets	4,598		4,598		4,524
TRCC/Rock Outlet Center
Statement of Operations
Revenues			480	0
Net income (loss)			20	(176)
Partner’s share of net income (loss)			10	(88)
Equity in earnings (losses)			10	247
Balance Sheet Information
Current assets	1,860		1,860		2,428
Property and equipment, net	53,040		53,040		24,633
Other assets	8,129		8,129		2,161
Long-term debt	(18,460)		(18,460)		0
Other liabilities	(6,903)		(6,903)		(8,577)
Net assets	37,666		37,666		20,645
Tejon Mountain Village LLC
Statement of Operations
Revenues			0	0
Net income (loss)			(70)	(83)
Partner’s share of net income (loss)			(35)	(42)
Equity in earnings (losses)			(35)	(41)
Balance Sheet Information
Current assets	365		365		99,690
Property and equipment, net	101,393		101,393		0
Other assets	0		0		0
Long-term debt	0		0		0
Other liabilities	(280)		(280)		(168)
Net assets	101,478		101,478		99,522
Centennial Founders, LLC
Statement of Operations
Revenues			407	314
Net income (loss)			(32)	(232)
Partner’s share of net income (loss)			(8)	(66)
Equity in earnings (losses)			0	0
Balance Sheet Information
Current assets	256		256		86
Property and equipment, net	76,355		76,355		74,968
Other assets	0		0		0
Long-term debt	0		0		0
Other liabilities	(293)		(293)		(204)
Net assets	$ 76,318		$ 76,318		$ 74,850