SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 28, 2012 segment	Jul. 30, 2011
Segment Reporting [Abstract]
Number of reportable segments	4
Segment Reporting Information [Line Items]
Net sales	$ 118,737	$ 110,804
Transfers between segments	0	0
Net sales to unaffiliated customers	118,737	110,804
Income (loss) from operations	4,170	1,418
Interest (income)/expense, net	(46)	4
Other (income)/expense, net	(41)	(43)
Income/(loss) before income taxes	4,257	1,457
Automotive
Segment Reporting Information [Line Items]
Net sales	71,307	63,366
Transfers between segments	(263)	(689)
Net sales to unaffiliated customers	71,044	62,677
Income (loss) from operations	2,658	2,246
Interest (income)/expense, net	(166)	(70)
Other (income)/expense, net	(700)	36
Income/(loss) before income taxes	3,524	2,280
Interconnect
Segment Reporting Information [Line Items]
Net sales	32,284	33,514
Transfers between segments	(569)	(1,126)
Net sales to unaffiliated customers	31,715	32,388
Income (loss) from operations	4,874	4,297
Interest (income)/expense, net	(84)	21
Other (income)/expense, net	666	300
Income/(loss) before income taxes	4,292	3,976
Power Products
Segment Reporting Information [Line Items]
Net sales	12,167	12,891
Transfers between segments	(48)	(45)
Net sales to unaffiliated customers	12,119	12,846
Income (loss) from operations	311	222
Interest (income)/expense, net	13	0
Other (income)/expense, net	(6)	96
Income/(loss) before income taxes	304	126
Other
Segment Reporting Information [Line Items]
Net sales	3,894	2,946
Transfers between segments	(27)	(16)
Net sales to unaffiliated customers	3,867	2,930
Income (loss) from operations	949	(999)
Interest (income)/expense, net	0	0
Other (income)/expense, net	0	3
Income/(loss) before income taxes	949	(1,002)
Eliminations/Corporate
Segment Reporting Information [Line Items]
Net sales	(915)	(1,913)
Transfers between segments	907	1,876
Net sales to unaffiliated customers	(8)	(37)
Income (loss) from operations	(4,622)	(4,348)
Interest (income)/expense, net	191	53
Other (income)/expense, net	(1)	(478)
Income/(loss) before income taxes	$ (4,812)	$ (3,923)