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Pro Forma Results of Operations (Detail) (Elcom, USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jul. 31, 2011
Elcom
Business Acquisition [Line Items]
Revenues	$ 18,986
Operating profit	1,812
Net income	$ 1,312
Earnings per share- basic	$ 0.16
Earnings per share- diluted	$ 0.15

- 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