Investment in Unconsolidated and Consolidated Joint Ventures - Condensed Statements of Operations and Balance Sheet Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Operations
Equity in earnings (losses)	$ 5,294	$ 4,006	$ 2,535
Balance Sheet Information
Current assets	65,927	83,244
Property and equipment, net	282,974	146,542
Long-term debt	(81,309)	(4,693)
Unconsolidated Properties [Member]
Statement of Operations
Revenues	131,499	129,233
Net income (loss)	8,944	5,646
Partner’s share of net income (loss)	3,649	2,208
Equity in earnings (losses)	5,294	4,006
Balance Sheet Information
Current assets	25,101	18,083
Property and equipment, net	133,609	189,767
Other assets	19,872	2,807
Long-term debt	(72,257)	(27,602)
Other liabilities	(8,321)	(11,624)
Net assets	98,004	171,431
Petro Travel Plaza Holdings LLC
Statement of Operations
Revenues	122,584	125,804
Net income (loss)	8,229	6,154
Partner’s share of net income (loss)	3,291	2,462
Equity in earnings (losses)	4,937	3,925
Balance Sheet Information
Current assets	18,960	14,832
Property and equipment, net	48,011	43,950
Other assets	181	208
Long-term debt	(15,808)	(16,602)
Other liabilities	(3,263)	(2,536)
Net assets	48,081	39,852
Five West Parcel LLC
Statement of Operations
Revenues	3,635	3,368
Net income (loss)	442	26
Partner’s share of net income (loss)	221	13
Equity in earnings (losses)	221	13
Balance Sheet Information
Current assets	3,834	813
Property and equipment, net	14,869	16,980
Other assets	67	438
Long-term debt	(11,000)	(11,000)
Other liabilities	(440)	(343)
Net assets	7,330	6,888
18-19 West LLC
Statement of Operations
Revenues	60	61
Net income (loss)	15	55
Partner’s share of net income (loss)	8	28
Equity in earnings (losses)	7	27
Balance Sheet Information
Current assets	5	10
Property and equipment, net	4,617	4,514
Other assets	0	0
Long-term debt	0	0
Other liabilities	(2)	0
Net assets	4,620	4,524
TRCC/Rock Outlet Center
Statement of Operations
Revenues	5,220	0
Net income (loss)	328	(470)
Partner’s share of net income (loss)	164	(235)
Equity in earnings (losses)	164	100
Balance Sheet Information
Current assets	2,302	2,428
Property and equipment, net	66,112	24,633
Other assets	19,624	2,161
Long-term debt	(45,449)	0
Other liabilities	(4,616)	(8,577)
Net assets	37,973	20,645
Tejon Mountain Village LLC
Statement of Operations
Revenues	0	0
Net income (loss)	(70)	(119)
Partner’s share of net income (loss)	(35)	(60)
Equity in earnings (losses)	(35)	(59)
Balance Sheet Information
Current assets		0
Property and equipment, net		99,690
Other assets		0
Long-term debt		0
Other liabilities		(168)
Net assets		99,522
Centennial Founders, LLC
Statement of Operations
Revenues	1,361	935
Net income (loss)	415	(223)
Partner’s share of net income (loss)	107	(62)
Equity in earnings (losses)	0	0
Balance Sheet Information
Current assets	651	86
Property and equipment, net	77,373	74,968
Other assets		0
Long-term debt		0
Other liabilities	(158)	(204)
Net assets	$ 77,866	$ 74,850