Supplemental Condensed Combining Financial Information (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010
Real Estate:
Land	$ 344,309	$ 345,473
Buildings and improvements	251,942	270,381
Total real estate	596,251	615,854
Less - accumulated depreciation and amortization	(129,838)	(137,117)
Real estate, net	466,413	478,737
Net investment in direct financing lease	92,290	92,632
Deferred rent receivable, net	9,459	8,080
Cash and cash equivalents	18,492	7,698	14,941	6,122
Notes, mortgages and accounts receivable, net	34,303	36,083
Other assets	26,969	11,859
Total assets	647,926	635,089
Liabilities
Borrowings under credit line	151,700	147,700
Term loan	22,420	22,810
Environmental remediation costs	52,263	57,700		14,874
Accounts payable and accrued liabilities	38,891	34,710
Total liabilities	269,476	262,920
Net assets (liabilities)		372,169
Getty Petroleum Marketing [Member]
Real Estate:
Land		131,077
Buildings and improvements		170,553
Total real estate		301,630
Less - accumulated depreciation and amortization		(107,478)
Real estate, net		194,152
Notes, mortgages and accounts receivable, net		5,743
Total assets		199,895
Liabilities
Environmental remediation costs		57,416
Accounts payable and accrued liabilities		4,002
Total liabilities		61,418
Net assets (liabilities)		138,477
Other Tenants [Member]
Real Estate:
Land		214,396
Buildings and improvements		99,479
Total real estate		313,875
Less - accumulated depreciation and amortization		(29,448)
Real estate, net		284,427
Net investment in direct financing lease		92,632
Deferred rent receivable, net		8,080
Notes, mortgages and accounts receivable, net		28,262
Other assets		7,611
Total assets		421,012
Liabilities
Environmental remediation costs		284
Accounts payable and accrued liabilities		19,564
Total liabilities		19,848
Net assets (liabilities)		401,164
Corporate [Member]
Real Estate:
Buildings and improvements		349
Total real estate		349
Less - accumulated depreciation and amortization		(191)
Real estate, net		158
Cash and cash equivalents		7,698	14,941	6,122
Notes, mortgages and accounts receivable, net		2,078
Other assets		4,248
Total assets		14,182
Liabilities
Borrowings under credit line		147,700
Term loan		22,810
Accounts payable and accrued liabilities		11,144
Total liabilities		181,654
Net assets (liabilities)		$ (167,472)