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Earnings per Share and Dividends per Share - Additional Information (Detail) (USD $)	0 Months Ended			9 Months Ended
	Jun. 12, 2014	Mar. 10, 2014	Dec. 09, 2013	Jun. 30, 2013
Earnings Per Share [Abstract]
Common stock equivalents (anti-dilutive) excluded from per share calculation				193,505
Dividend paid	$ 0.04000	$ 0.04000	$ 0.03125
Date of record	May 20, 2014	Feb. 14, 2014	Nov. 15, 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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