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Earnings Per Share Data - Additional Information (Detail)	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Exercisable stock options, included in the diluted earnings per share calculation		318,000
Dilutive common stock equivalents	0	43,000
Anti-dilutive exercisable stock options, not included in the diluted earnings per share calculation	344,000	27,500

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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