Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014
Cash flows from operating activities:
Net (loss) income	$ (113,982)	$ 33,161
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Depreciation and amortization	42,916	16,884
Amortization of debt issuance costs and discount	2,037	0
Change in deferred income tax provision	17,689	3,827
Loss (gain) on sale of marketable securities	336	(1,698)
Stock-based compensation expense	13,609	9,543
Changes in assets and liabilities:
Accounts receivable, net	7,708	323
Inventories	6,738	(18,852)
Prepaid expenses and other current assets	(2,776)	(3,289)
Accounts payable and accrued expenses (includes restructuring)	7,989	(3,045)
Accrued payroll obligations	(10,309)	(1,339)
Income taxes payable	971	0
Deferred income and allowances on sales to sell-through distributors	5,481	3,799
Deferred income and allowances on sales to sell-through distributors	967	0
Net cash (used in) provided by operating activities	(20,626)	39,314
Cash flows from investing activities:
Proceeds from sales or maturities of short-term marketable securities	142,956	83,615
Proceeds from sales of auction rate securities	0	5,488
Purchases of marketable securities	(4,005)	(116,421)
Cash paid for business acquisition, net of cash acquired	(431,068)	0
Capital expenditures, net	(11,584)	(6,873)
Cash paid for a non-marketable cost-method investment	(3,000)	0
Cash paid for software licenses	(5,393)	(3,800)
Net cash used in investing activities	(312,094)	(37,991)
Cash flows from financing activities:
Net share settlement upon issuance of restricted stock units	(2,660)	(2,682)
Purchases of treasury stock	(6,970)	(1,700)
Net proceeds from issuance of common stock	3,382	11,177
Net proceeds from issuance of long-term debt	346,500	0
Cash paid for debt issuance costs	(8,283)	0
Repayment of debt	(1,750)	0
Net cash provided by financing activities	330,219	6,795
Effect of exchange rate change on cash	(754)	579
Net (decrease) increase in cash and cash equivalents	(3,255)	8,697
Beginning cash and cash equivalents	115,611	114,310
Ending cash and cash equivalents	112,356	123,007
Supplemental cash flow information:
Change in unrealized loss related to marketable securities, net of tax, included in Accumulated other comprehensive loss	(133)	(182)
Income taxes paid, net of refunds	5,403	1,090
Interest Paid	6,225	0
Accrued purchases of plant and equipment	$ 817	$ (84)