Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 29, 2013	Dec. 23, 2012	Dec. 29, 2013	Dec. 23, 2012
Segment Reporting [Abstract]
Number of reportable segments			6
Schedule of Segment Reporting Information [Line Items]
Revenues	$ 269,965	$ 223,822	$ 539,715	$ 476,314
Percentage of total (in hundredths)	100.00%	100.00%	100.00%	100.00%
Gross margin (in hundredths)	36.30%	21.90%	35.80%	25.10%
Customer Segments [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	269,691	223,571	539,199	473,916
Percentage of total (in hundredths)	99.90%	99.90%	99.90%	99.50%
Gross margin (in hundredths)	36.20%	21.80%	35.70%	24.90%
Power Management Devices [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	102,878	83,273	204,844	174,100
Percentage of total (in hundredths)	38.10%	37.20%	38.00%	36.60%
Gross margin (in hundredths)	30.00%	14.50%	30.40%	17.60%
Energy-Saving Products [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	46,589	36,174	97,086	80,629
Percentage of total (in hundredths)	17.30%	16.20%	18.00%	16.90%
Gross margin (in hundredths)	31.50%	14.80%	32.20%	14.40%
Automotive Products [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	36,364	28,414	72,827	57,252
Percentage of total (in hundredths)	13.50%	12.70%	13.50%	12.00%
Gross margin (in hundredths)	31.20%	11.10%	31.80%	10.80%
Enterprise Power [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	33,195	28,649	65,444	66,458
Percentage of total (in hundredths)	12.30%	12.80%	12.10%	14.00%
Gross margin (in hundredths)	42.40%	25.00%	40.00%	32.40%
HiRel [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	50,665	47,061	98,998	95,477
Percentage of total (in hundredths)	18.80%	21.00%	18.30%	20.00%
Gross margin (in hundredths)	52.60%	44.70%	50.30%	50.20%
Intellectual Property [Member]
Schedule of Segment Reporting Information [Line Items]
Revenues	$ 274	$ 251	$ 516	$ 2,398
Percentage of total (in hundredths)	0.10%	0.10%	0.10%	0.50%
Gross margin (in hundredths)	100.00%	100.00%	100.00%	72.50%