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Earnings Per Share and Dividends Per Share - Additional Information (Detail) (USD $)	1 Months Ended	0 Months Ended	1 Months Ended	9 Months Ended
	Jun. 17, 2013	Dec. 07, 2012	Feb. 25, 2013	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share And Dividends Per Share [Abstract]
Common stock equivalents (anti-dilutive) excluded from per share calculation				193,505	439,738
Dividend paid	$ 0.03125	$ 0.03125	$ 0.03125
Date of record	May 24, 2013	Nov. 15, 2012	Feb. 01, 2013

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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