Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Real Estate:
Land	$ 345,984	$ 345,473
Buildings and improvements	270,902	270,381
Total real estate	616,886	615,854
Less - accumulated depreciation and amortization	(140,354)	(137,117)
Real estate, net	476,532	478,737
Net investment in direct financing leases	92,471	92,632
Deferred rent receivable (net of allowance of $24,574 at March 31, 2012 and $25,630 at December 31, 2011)	8,587	8,080
Cash and cash equivalents	16,087	7,698
Notes, mortgages and accounts receivable, (net of allowance of $19,700 at March 31, 2012 and $9,480 at December 31, 2011)	32,627	36,083
Other assets	17,281	11,859
Total assets	643,585	635,089
LIABILITIES AND SHAREHOLDERS' EQUITY:
Borrowings under credit line	151,700	147,700
Term loan	22,615	22,810
Environmental remediation costs	59,006	57,700
Accounts payable and accrued liabilities	31,433	34,710
Total liabilities	264,754	262,920
Commitments and contingencies (notes 2, 3, 5 and 6)
Shareholders' equity:
Common stock, par value $.01 per share; authorized 50,000,000 shares; issued 33,394,755 at March 31, 2012 and 33,394,395 at December 31, 2011	334	334
Paid-in capital	460,864	460,687
Dividends paid in excess of earnings	(82,367)	(88,852)
Total shareholders' equity	378,831	372,169
Total liabilities and shareholders' equity	$ 643,585	$ 635,089