CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jul. 03, 2016	Jul. 05, 2015
Cash flows from operating activities:
Net (loss) income	$ (173,560)	$ 135,666
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation	32,168	36,230
Amortization	37,180	31,395
Stock-based compensation	15,457	15,405
Provision for excess and obsolete inventory	12,115	15,881
Goodwill impairment	254,946
Intangible assets impairment	83,339
Deferred taxes	(21,458)	(10,371)
Contingent consideration adjustment	2,478	(1,600)
Impairment of fixed assets	4,179
Property insurance recovery	(5,051)
Retirement plans actuarial gains	(1,862)
Gain from the sale of an equity investment		(5,406)
Non-cash charge for the sale of inventories revalued at date of acquisition		595
Tax benefit related to employee stock compensation awards		(892)
Other	576	1,154
Changes in operating assets and liabilities, net of business acquired:
Accounts receivable	(138,230)	(142,493)
Inventories	30,222	23,500
Prepayments and other assets	(13,657)	14,054
Accounts payable and other accrued expenses	(15,192)	53,392
Deferred revenue and customer advances	106,072	5,685
Retirement plans contributions	(2,298)	(1,999)
Income taxes	6	23,261
Net cash provided by operating activities	207,430	193,457
Cash flows from investing activities:
Purchases of property, plant and equipment	(46,593)	(46,110)
Purchases of available-for-sale marketable securities	(437,311)	(590,250)
Proceeds from sales of available-for-sale marketable securities	334,798	631,400
Proceeds from maturities of available-for-sale marketable securities	128,024	231,416
Proceeds from property insurance	5,051
Acquisition of business, net of cash acquired		(282,332)
Proceeds from the sale of an equity investment		5,406
Proceeds from life insurance		1,098
Net cash used for investing activities	(16,031)	(49,372)
Cash flows from financing activities:
Issuance of common stock under employee stock purchase and stock option plans	17,896	17,878
Repurchase of common stock	(56,783)	(128,316)
Dividend payments	(24,425)	(25,857)
Payment of contingent consideration	(11,697)
Tax benefit related to employee stock compensation awards		892
Payment of revolving credit facility costs		(2,253)
Net cash used for financing activities	(75,009)	(137,656)
Increase in cash and cash equivalents	116,390	6,429
Cash and cash equivalents at beginning of period	264,705	294,256
Cash and cash equivalents at end of period	$ 381,095	$ 300,685