NOTE H - ACQUISITION OF ELCOM TECHNOLOGIES, INC. (Detail) - Business Acquisition, Pro Forma Information (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
	Jan. 31, 2012	Jan. 31, 2012
Revenues	$ 17,462	$ 53,299
Operating profit	984	4,058
Net income	$ 554	$ 2,538
Earnings per share- basic (in Dollars per share)	$ 0.07	$ 0.31
Earnings per share- diluted (in Dollars per share)	$ 0.07	$ 0.30