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Pro Forma Results of Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended
	Jun. 30, 2012
Business Combinations [Abstract]
Net sales	$ 83,661
Net income	$ 5,375
Net income per share (basic) (in dollars per share)	$ 1.00
Net income per share (diluted) (in dollars per share)	$ 1.00

- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References+ Details

- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References+ Details