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Intangible Assets and Goodwill - Goodwill Rollforward (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended							12 Months Ended				12 Months Ended		12 Months Ended
	Apr. 27, 2013	Apr. 27, 2013	Apr. 28, 2012	Apr. 30, 2011	Apr. 27, 2013 Interconnect	Apr. 28, 2012 Interconnect	Apr. 30, 2011 Interconnect	Jan. 26, 2013 Interconnect	Apr. 27, 2013 Power Products	Apr. 28, 2012 Power Products	Apr. 30, 2011 Power Products	Jan. 26, 2013 Power Products	Apr. 27, 2013 Hetronic Italy	Sep. 30, 2012 Hetronic Italy	Apr. 30, 2011 Eetrex	Mar. 31, 2011 Eetrex
Goodwill [Roll Forward]
Beginning balance	$ 17,233	$ 16,422	$ 16,422	$ 12,096	$ 11,146	$ 11,146	$ 11,146	$ 11,957	$ 5,276	$ 5,276	$ 950	$ 5,276		$ 794		$ 4,326
Impairment	(4,326)	(4,326)	0	0	0				(4,326)
Attributable to acquisitions		794	0	4,326	794	0	0		0	0	4,326		794		4,326
Foreign currency translation		17			17				0
Ending balance	$ 12,907	$ 12,907	$ 16,422	$ 16,422	$ 11,957	$ 11,146	$ 11,146	$ 11,957	$ 950	$ 5,276	$ 5,276	$ 5,276		$ 794		$ 4,326

X

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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The increase (decrease) to the recorded value of goodwill for foreign currency translation adjustments.

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