CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended	33 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016	Jan. 02, 2016	Sep. 30, 2017
Cash flows from operating activities:
Net loss	$ (43,052)		$ (12,414)	$ (63,349)	$ (45,935)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization				45,591	47,908
Impairment of acquired intangible assets	36,198		7,866	36,198	7,866
Amortization of debt issuance costs and discount				1,680	1,212
Loss on sale or maturity of marketable securities				237	72
Gain on forward contracts				(72)	0
Stock-based compensation expense				9,286	12,107
(Gain) Loss on disposal of fixed assets				(197)	263
Gain on sale of building	(4,624)		0	(4,624)	0
Loss (gain) on sale of assets and business units				1,496	(2,646)
Equity in net loss of an unconsolidated affiliate, net of tax	199		407	692	1,085		$ 2,600
Changes in assets and liabilities:
Accounts receivable, net				20,687	(5,728)
Inventories				1,519	(4,644)
Prepaid expenses and other assets				3,839	(2,227)
Accounts payable and accrued expenses (includes restructuring)				(17,901)	6,295
Accrued payroll obligations				(2,002)	(454)
Income taxes payable				(711)	1,335
Deferred income and allowances on sales to sell-through distributors				3,862	3,067
Deferred licensing and services revenue				(485)	(258)
Net cash provided by operating activities				35,746	19,318
Cash flows from investing activities:
Proceeds from sales of and maturities of short-term marketable securities				9,689	11,977
Purchases of marketable securities				(7,420)	(5,961)
Proceeds from sale of building				7,895	0
Cash paid for costs of sale of building				(1,004)	0
Capital expenditures				(12,325)	(13,991)
Proceeds from sale of assets and business units, net of cash sold				967	1,972
Cash paid for a non-marketable equity method investment	(1,000)	$ (1,000)	(1,000)	(2,000)	(1,000)	$ (5,000)
Cash paid for software licenses				(6,472)	(7,370)
Net cash used in investing activities				(10,670)	(14,373)
Cash flows from financing activities:
Restricted stock unit withholdings				(2,787)	(2,883)
Proceeds from issuance of common stock				3,452	5,353
Repayment of debt				(33,679)	(4,279)
Net cash used in financing activities				(33,014)	(1,809)
Effect of exchange rate change on cash				1,381	(579)
Net increase in cash and cash equivalents				(6,557)	2,557
Beginning cash and cash equivalents				106,552	84,606
Ending cash and cash equivalents	99,995		87,163	99,995	87,163	$ 84,606	99,995
Supplemental cash flow information:
Change in unrealized gain (loss) related to marketable securities, net of tax, included in Accumulated other comprehensive loss				72	50
Income taxes paid, net of refunds				2,308	7,250
Interest paid				16,379	13,849
Accrued purchases of plant and equipment				51	1,678
Note receivable resulting from sale of assets and business units	$ 3,050		$ 0	$ 3,050	$ 0		$ 3,050