Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 24, 2013	Mar. 25, 2012	Mar. 24, 2013	Mar. 25, 2012
Segment Information [Abstract]
Number of reportable segments			6
Schedule of Segment Reporting Information [Line Items]
Revenues	$ 224,268	$ 248,094	$ 700,582	$ 780,913
Percentage of total (in hundredths)	100.00%	100.00%	100.00%	100.00%
Gross margin (in hundredths)	24.30%	29.80%	24.80%	34.60%
Customer Segments [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	223,972	247,660	697,888	779,647
Percentage of total (in hundredths)	99.90%	99.80%	99.60%	99.80%
Gross margin (in hundredths)	24.20%	29.70%	24.60%	34.50%
Power Management Devices [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	85,209	80,653	259,309	264,350
Percentage of total (in hundredths)	38.00%	32.50%	37.00%	33.90%
Gross margin (in hundredths)	21.00%	19.00%	18.70%	26.20%
Energy-Saving Products [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	43,614	57,362	124,244	192,357
Percentage of total (in hundredths)	19.40%	23.10%	17.70%	24.60%
Gross margin (in hundredths)	12.20%	29.70%	13.60%	36.50%
Automotive Products [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	31,107	28,799	88,359	82,345
Percentage of total (in hundredths)	13.90%	11.60%	12.60%	10.50%
Gross margin (in hundredths)	22.00%	18.20%	14.70%	22.70%
Enterprise Power [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	20,488	32,194	86,947	98,690
Percentage of total (in hundredths)	9.10%	13.00%	12.40%	12.60%
Gross margin (in hundredths)	36.10%	31.00%	33.30%	36.00%
HiRel [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	43,554	48,652	139,029	141,905
Percentage of total (in hundredths)	19.40%	19.60%	19.80%	18.20%
Gross margin (in hundredths)	38.40%	53.30%	46.50%	53.00%
Intellectual Property [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	$ 296	$ 434	$ 2,694	$ 1,266
Percentage of total (in hundredths)	0.10%	0.20%	0.40%	0.20%
Gross margin (in hundredths)	100.00%	100.00%	75.50%	100.00%