CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net earnings	$ 10,350	$ 6,485
Adjustments to reconcile net earnings to net cash flow provided by operating activities:
Depreciation and amortization expense	2,643	3,987
Impairment charges	3,984	363
Gains on dispositions of real estate	(8,432)	(533)
Deferred rent receivable, net of allowance	(2,580)	(507)
Allowance (credit) for deferred rent and accounts receivable	(1,831)	10,220
Other	1,847	1,259
Changes in assets and liabilities:
Accounts receivable, net	1,347	(7,397)
Prepaid expenses and other assets	(102)	(1,744)
Environmental remediation obligations	(1,966)	(927)
Accounts payable and accrued liabilities	1,339	(2,949)
Net cash flow provided by operating activities	6,599	8,257
Cash flows from investing activities:
Property acquisitions and capital expenditures	(197)	(716)
Proceeds from dispositions of real estate	15,461	624
Increase in cash held for property acquisitions	(12,786)	(572)
Issuance of notes, mortgages and other receivables	(1,773)
Collection of notes and mortgages receivable	1,726	633
Other	219
Net cash flow provided by (used in) investing activities	2,650	(31)
Cash flows from financing activities:
Borrowings under credit agreements	71,900	4,000
Repayments under credit agreements	(150,290)
Borrowings under term loan agreement	100,000
Repayments under term loan agreement	(22,030)	(195)
Payments of cash dividends	(4,202)
Payments of loan origination costs	(2,769)	(3,642)
Other	(8)
Net cash flow provided by (used in) financing activities	(7,399)	163
Net increase in cash and cash equivalents	1,850	8,389
Cash and cash equivalents at beginning of period	16,876	7,698
Cash and cash equivalents at end of period	18,726	16,087
Supplemental disclosures of cash flow information Cash paid (refunded) during the period for:
Interest paid	1,655	1,038
Income taxes paid, net	297	71
Environmental remediation obligations	1,615	415
Non-cash transactions:
Issuance of mortgages related to property dispositions	$ 1,777