Note 8 - Segment Reporting (Tables)

9 Months Ended

Jan. 31, 2013

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended January 31, 2013
	EMS		Proprietary		Total
Total sales	$	4,424	$	3,034	$	7,458
Segment gross margin	$	1,226	$	1,577	$	2,803

	Three Months Ended January 31, 2012
	EMS		Proprietary		Total
Total sales	$	2,665	$	2,553	$	5,218
Segment gross margin	$	723	$	1,267	$	1,990

	Nine Months Ended January 31, 2013
	EMS		Proprietary		Total
Total sales	$	9,968	$	7,885	$	17,853
Segment gross margin	$	2,574	$	4,029	$	6,603
Goodwill	$	--	$	1,942	$	1,942

	Nine Months Ended January 31, 2012
	EMS		Proprietary		Total
Total sales	$	9,748	$	7,276	$	17,024
Segment gross margin	$	2,346	$	3,745	$	6,091
Goodwill	$	--	$	1,942	$	1,942

Revenue from External Customers by Products and Services [Table Text Block]

	Three Months Ended January 31,				Nine Months Ended January 31,
	2013		2012		2013		2012
Products and services:
Electronic manufacturing	$	4,382	$	2,614	$	9,800	$	9,595
Remote monitoring solutions		1,357		1,527		4,208		4,786
Industrial data communications		113		355		624		628
Mobile data acquisition		1,484		570		2,765		1,543
Other services:
EMS related services		42		51		168		153
Proprietary product related services		80		101		287		319
Total sales	$	7,458	$	5,218	$	17,853	$	17,024