CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Oct. 02, 2015
Cash flows from operating activities:
Net loss	$ (61,871)	$ (8,462)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Amortization of intangibles	12,711	4,971
Depreciation	13,198	10,143
Stock-based compensation	8,542	11,845
Amortization of discount on convertible debt	3,669	0
Restructuring, asset impairment and loss on retirement of fixed assets	1,476	354
Loss on impairment of long-term investment	2,735	2,505
Provision for excess and obsolete inventories	6,246	1,234
Allowance for doubtful accounts, returns and discounts	1,222	576
Other non-cash adjustments, net	251	0
Changes in operating assets and liabilities, net of effects of acquisition:
Accounts receivable	(12,869)	9,440
Inventories	2,225	(7,936)
Prepaid expenses and other assets	(5,938)	(13,817)
Accounts payable	2,505	1,772
Deferred revenue	20,038	5,237
Income taxes payable	(827)	(1,372)
Accrued and other liabilities	(6,230)	(7,926)
Net cash (used in) provided by operating activities	(12,917)	8,564
Cash flows from investing activities:
Acquisition of business, net of cash acquired	(75,669)	0
Purchases of investments	0	(20,714)
Proceeds from maturities of investments	18,692	26,534
Purchases of property and equipment	(11,423)	(10,393)
Purchases of long-term investments	0	(85)
Restricted cash	0	(1,091)
Net cash used in investing activities	(68,400)	(5,749)
Cash flows from financing activities:
Payment of convertible debt issuance costs	(582)	0
Proceeds from other debts and capital leases	5,968	0
Repayment of other debts and capital leases	(8,038)	0
Payments for repurchase of common stock	0	(20,007)
Proceeds from common stock issued to employees	3,736	9,255
Payment of tax withholding obligations related to net share settlements of restricted stock units	(1,313)	(3,288)
Net cash used in financing activities	(229)	(14,040)
Effect of exchange rate changes on cash and cash equivalents	97	(236)
Net decrease in cash and cash equivalents	(81,449)	(11,461)
Cash and cash equivalents at beginning of period	126,190	73,032
Cash and cash equivalents at end of period	$ 44,741	$ 61,571