CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
CONSOLIDATED STATEMENTS OF EQUITY
Distributions - common share per share (in dollars per share)			$ 1.15
Shares repurchased (in shares)	154,692	52,403	256,110
Other comprehensive loss, reclassification adjustment for gains included in net income	$ 462	$ 1,557	$ 1,014
Stock dividend (in shares)		2,437,352