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Statements of Cash Flows (Parenthetical) (Noncash Transactions, USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Noncash Transactions
Receivable on previously capitalized real estate taxes on Anacostia property	$ 2,250
1031 exchange of real estate		4,941
Discontinued operations provision for income taxes		(1,792)
Permanent tax benefit on Caroline County bargain sale		2,053
Income tax receivable on Caroline County bargain sale		342
Long-term deferred tax liability on Caroline County bargain sale		$ 1,711

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