Discontinued Operations - Schedule of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Oct. 04, 2015	Oct. 02, 2016	Oct. 04, 2015
Revenue and Expenses
Income (loss) from discontinued operations before income tax expense (benefit)	$ 0	$ 78,290	$ (255)	$ 79,518
Significant Noncash Items
Capital expenditures			0	482
SISD | Discontinued Operations, Disposed of by Sale
Revenue and Expenses
Revenue	0	0	0	23,248
Cost of revenue	0	0	0	(11,291)
Research, development, and engineering expenses	0	0	0	(2,126)
Selling, general, and administrative expenses	0	0	0	(7,800)
Foreign currency gain (loss)	0	0	0	(177)
Operating income from discontinued operations	0	0	0	1,854
Gain (loss) on sale of discontinued operations	0	125,465	(404)	125,465
Income (loss) from discontinued operations before income tax expense (benefit)	0	125,465	(404)	127,319
Income tax expense (benefit) on discontinued operations	0	47,175	(149)	47,801
Net income (loss) from discontinued operations	0	78,290	(255)	79,518
Significant Noncash Items
Stock-based compensation expense	0	1,106	0	1,533
Capital expenditures	0	0	0	482
Depreciation expense	0	0	0	401
Amortization expense	$ 0	$ 0	$ 0	$ 165