Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 23, 2012	Dec. 25, 2011	Dec. 23, 2012	Dec. 25, 2011
Segment Information [Abstract]
Number of reportable segments			6
Schedule of Segment Reporting Information [Line Items]
Revenues	$ 223,822	$ 230,078	$ 476,314	$ 532,819
Percentage of total (in hundredths)	100.00%	100.00%	100.00%	100.00%
Gross margin (in hundredths)	21.90%	35.40%	25.10%	36.80%
Customer Segments [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	223,571	231,015	473,916	531,987
Percentage of total (in hundredths)	99.90%	100.40%	99.50%	99.80%
Gross margin (in hundredths)	21.80%	35.60%	24.90%	36.70%
Power Management Devices [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	83,273	72,490	174,100	183,696
Percentage of total (in hundredths)	37.20%	31.50%	36.60%	34.50%
Gross margin (in hundredths)	14.50%	29.30%	17.60%	29.40%
Energy-Saving Products [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	36,174	58,938	80,629	134,995
Percentage of total (in hundredths)	16.20%	25.60%	16.90%	25.30%
Gross margin (in hundredths)	14.80%	36.60%	14.40%	39.30%
Automotive Products [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	28,414	24,647	57,252	53,547
Percentage of total (in hundredths)	12.70%	10.70%	12.00%	10.00%
Gross margin (in hundredths)	11.10%	17.90%	10.80%	25.20%
Enterprise Power [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	28,649	30,530	66,458	66,496
Percentage of total (in hundredths)	12.80%	13.30%	14.00%	12.50%
Gross margin (in hundredths)	25.00%	36.10%	32.40%	38.40%
HiRel [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	47,061	44,410	95,477	93,253
Percentage of total (in hundredths)	21.00%	19.30%	20.00%	17.50%
Gross margin (in hundredths)	44.70%	54.20%	50.20%	52.90%
Intellectual Property [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	$ 251	$ (937)	$ 2,398	$ 832
Percentage of total (in hundredths)	0.10%	(0.40%)	0.50%	0.20%
Gross margin (in hundredths)	100.00%	(100.00%)	72.50%	100.00%