CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Oct. 02, 2016	Oct. 04, 2015
Cash flows from operating activities:
Net (loss) income	$ (109,767)	$ 207,118
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation	48,437	52,531
Amortization	46,275	52,159
Stock-based compensation	23,012	23,080
Provision for excess and obsolete inventory	15,148	18,939
Goodwill impairment	254,946
Intangible assets impairment	83,339
Deferred taxes	(42,568)	(13,973)
Contingent consideration adjustment	10,451	(2,600)
Impairment of fixed assets	4,179
Property insurance recovery	(5,363)
Retirement plans actuarial gains	(1,200)
Gain from the sale of an equity investment		(5,406)
Non-cash charge for the sale of inventories revalued at date of acquisition		1,567
Tax benefit related to employee stock compensation awards	(3,399)	(3,213)
Other	151	2,523
Changes in operating assets and liabilities:
Accounts receivable	45,660	(91,117)
Inventories	48,601	33,376
Prepayments and other assets	(12,961)	15,529
Accounts payable and other accrued expenses	(47,941)	52,663
Deferred revenue and customer advances	53,380	6,751
Retirement plans contributions	(5,871)	(2,998)
Income taxes	4,227	25,677
Net cash provided by operating activities	408,736	372,606
Cash flows from investing activities:
Purchases of property, plant and equipment	(66,252)	(66,727)
Purchases of available-for-sale marketable securities	(875,837)	(957,606)
Proceeds from sales of available-for-sale marketable securities	466,744	843,734
Proceeds from maturities of available-for-sale marketable securities	202,162	330,363
Proceeds from property insurance	5,051
Acquisition of business, net of cash acquired		(282,741)
Proceeds from the sale of an equity investment		5,406
Proceeds from life insurance		1,098
Net cash used for investing activities	(268,132)	(126,473)
Cash flows from financing activities:
Issuance of common stock under stock purchase and stock option plans	20,085	18,145
Repurchase of common stock	(85,092)	(226,843)
Dividend payments	(36,548)	(38,434)
Payments of contingent consideration	(11,697)
Tax benefit related to employee stock compensation awards	3,399	3,213
Payment of revolving credit facility costs		(2,253)
Net cash used for financing activities	(109,853)	(246,172)
Effects of exchange rate changes on cash and cash equivalents	2,481
Increase (decrease) in cash and cash equivalents	33,232	(39)
Cash and cash equivalents at beginning of period	264,705	294,256
Cash and cash equivalents at end of period	$ 297,937	$ 294,217