Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015
Cash flows from operating activities:
Net loss	$ (33,521)	$ (88,917)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	32,352	25,363
Amortization of debt issuance costs and discount	660	1,105
Change in deferred income tax provision	(391)	22,385
Loss on sale or maturity of marketable securities	72	293
Gain on forward contracts	(4)	0
Stock-based compensation expense	7,798	8,363
Loss on disposal of fixed assets	314	0
Gain on sale of business unit	(2,646)	0
Equity in net loss of an unconsolidated affiliate, net of tax	678	0
Changes in assets and liabilities:
Accounts receivable, net	3,524	16,176
Inventories	(10,847)	4,969
Prepaid expenses and other current assets	18	47
Accounts payable and accrued expenses (includes restructuring)	23,900	(8,232)
Accrued payroll obligations	574	(2,637)
Income taxes payable	138	0
Deferred income and allowances on sales to sell-through distributors	10,155	4,638
Deferred income and allowances on sales to sell-through distributors	(117)	1,040
Net cash provided by (used in) operating activities	32,657	(15,407)
Cash flows from investing activities:
Proceeds from sales or maturities of short-term marketable securities	11,960	112,381
Purchases of marketable securities, net	(2,944)	(4,005)
Cash paid for business acquisition, net of cash acquired	0	(426,661)
Capital expenditures, net	(10,102)	(7,032)
Proceeds from sale of business unit, net of cash sold	1,972	0
Cash paid for a non-marketable investment	0	(1,500)
Cash paid for software licenses	(5,672)	(3,251)
Net cash used in investing activities	(4,786)	(330,068)
Cash flows from financing activities:
Net share settlement upon issuance of restricted stock units	(1,427)	(4,438)
Purchases of treasury stock	0	(6,970)
Net proceeds from issuance of common stock	3,326	5,546
Net proceeds from issuance of long-term debt	0	346,500
Cash paid for debt issuance costs	0	(8,282)
Repayment of debt	(3,404)	(875)
Net cash (used in) provided by financing activities	(1,505)	331,481
Effect of exchange rate change on cash	(441)	(119)
Net increase in cash and cash equivalents	25,925	(14,113)
Beginning cash and cash equivalents	84,606	115,611
Ending cash and cash equivalents	110,531	101,498
Supplemental cash flow information:
Change in unrealized gain (loss) related to marketable securities, net of tax, included in Accumulated other comprehensive loss	11	(3)
Income taxes paid, net of refunds	4,864	3,112
Interest paid	9,264	4,695
Accrued purchases of plant and equipment	$ 308	$ (227)