Other Divestitures (not accounted as discontinued operations) (Details) (USD $)	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended	1 Months Ended
	Dec. 13, 2013 Assets of Audio Business	Dec. 29, 2013 Assets of Audio Business	Jul. 12, 2013 PCI Express	Sep. 29, 2013 PCI Express	Mar. 07, 2013 Smart Meter business	Mar. 31, 2013 Smart Meter business	Jan. 31, 2012 Wafer Fabrication Facility
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sale (including amounts held in escrow)	$ 200,000				$ 10,264,000		$ 26,330,000
Maximum contingent consideration	1,000,000
Total consideration	1,200,000
Fair value adjustment to contingent consideration	(1,000,000)
Estimate of fair value of transitional services agreement	0
Fair value adjustment to transitional services agreement	(300,000)
Less book value of assets sold and direct costs related to the sale:
Fixed assets	(135,000)		(1,312,000)		(22,000)		(3,131,000)
Inventories	(3,051,000)		(876,000)		(1,299,000)
Other assets	(304,000)						(1,362,000)
Goodwill allocation			(7,323,000)
Liabilities transferred							476,000
Transaction and other costs	(126,000)		(4,239,000)		(957,000)		(1,657,000)
Gain on divestiture	(3,716,000)	3,400,000	82,349,000	82,300,000	7,986,000	8,000,000	20,656,000
Escrow deposits related to property sales					1,000,000
Holding period for escrow deposit					1 year
Cash deposit received from divestiture of business			$ 96,099,000				$ 5,000,000