Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014
Operating activities:
Net income (loss)	$ 62,723	$ (1,425)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	40,080	33,005
Amortization	35,908	24,854
Share-based compensation expense	8,120	6,513
Charge for fair value write-up of acquired inventory sold	0	48,586
Provision for deferred income taxes	2,594	(28,782)
Other	7,569	7,036
Changes in operating assets and liabilities:
Trade accounts and notes receivable	(38,020)	(21,299)
Inventories	(39,550)	(8,078)
Accounts payable and accrued liabilities	12,576	27,929
Other current assets	4,845	45
Income taxes payable and refundable income taxes	(3,647)	(3,153)
Other	(24,498)	5,989
Net cash provided by operating activities	68,700	91,220
Investing activities:
Acquisition of business, net of cash acquired	0	(809,390)
Acquisition of property, plant and equipment	(55,696)	(44,013)
Proceeds from sale and maturities of short-term investments	2,111	8,888
Payments for non-compete agreements	0	(7,517)
Other	347	560
Net cash used in investing activities	(53,238)	(851,472)
Financing activities:
Proceeds from long-term debt	0	855,200
Payments of long-term debt	(100,000)	(62,500)
Issuance of common stock	2,608	1,705
Taxes paid related to net share settlement of equity awards	(2,458)	(2,290)
Payments for debt issue costs	0	(20,747)
Other	665	763
Net cash (used in) provided by financing activities	(99,185)	772,131
Effect of exchange rate changes on cash and cash equivalents	(4,915)	(5,812)
(Decrease) increase in cash and cash equivalents	(88,638)	6,067
Cash and cash equivalents at beginning of period	389,699	384,426
Cash and cash equivalents at end of period	$ 301,061	$ 390,493