Guarantor Financial Information Condensed Consolidated Statements of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended											12 Months Ended
	Dec. 28, 2013		Sep. 28, 2013		Jun. 29, 2013		Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Net sales	$ 428,749	[1]	$ 425,786	[1]	$ 423,593	[1]	$ 445,422	$ 424,915	$ 452,732	$ 436,674	$ 387,108	$ 1,723,550	$ 1,701,429	$ 1,797,249
Costs and expenses:
Cost of sales and operating expenses												1,261,101	1,232,604	1,268,221
Selling, general and administrative expenses												170,825	151,713	136,135
Depreciation and amortization												98,787	85,371	78,909
Acquisition costs												23,271	0	0
Total costs and expenses												1,553,984	1,469,688	1,483,265
Operating income	18,536	[1]	41,652	[1]	50,802	[1]	58,576	49,487	65,776	63,968	52,510	169,566	231,741	313,984
Interest expense												(38,108)	(24,054)	(37,163)
Foreign currency gains (losses)												28,107	0	0
Other income/(expense), net												(3,547)	1,760	(2,955)
Equity in net income/(loss) of unconsolidated subsidiary												7,660	(2,662)	(1,572)
Earnings in investments in subsidiaries												0	0	0
Income from operations before income taxes	23,078	[1]	45,024	[1]	42,753	[1]	52,823	44,908	59,307	57,829	44,741	163,678	206,785	272,294
Income taxes (benefit)												54,711	76,015	102,876
Net income	22,493	[1]	27,651	[1]	26,418	[1]	32,405	28,802	37,172	36,225	28,571	108,967	130,770	169,418
Issuer [Member]
Net sales												679,789	658,897	721,990
Costs and expenses:
Cost of sales and operating expenses												530,740	512,199	553,218
Selling, general and administrative expenses												91,723	80,432	67,829
Depreciation and amortization												24,794	23,542	23,531
Acquisition costs												14,074
Total costs and expenses												661,331	616,173	644,578
Operating income												18,458	42,724	77,412
Interest expense												(36,964)	(24,047)	(37,161)
Foreign currency gains (losses)												27,516
Other income/(expense), net												(3,373)	(1,572)	(2,533)
Equity in net income/(loss) of unconsolidated subsidiary												0	0	0
Earnings in investments in subsidiaries												105,178	119,953	145,950
Income from operations before income taxes												110,815	137,058	183,668
Income taxes (benefit)												1,848	6,288	14,250
Net income												108,967	130,770	169,418
Guarantors [Member]
Net sales												1,231,617	1,216,264	1,238,858
Costs and expenses:
Cost of sales and operating expenses												931,088	894,820	879,277
Selling, general and administrative expenses												76,016	71,141	68,149
Depreciation and amortization												68,139	61,807	55,356
Acquisition costs												0
Total costs and expenses												1,075,243	1,027,768	1,002,782
Operating income												156,374	188,496	236,076
Interest expense												3,281	(7)	(2)
Foreign currency gains (losses)												(42)
Other income/(expense), net												55	3,355	(479)
Equity in net income/(loss) of unconsolidated subsidiary												0	0	0
Earnings in investments in subsidiaries												0	0	0
Income from operations before income taxes												159,668	191,844	235,595
Income taxes (benefit)												52,351	70,523	89,011
Net income												107,317	121,321	146,584
Non-guarantors [Member]
Net sales												40,472	14,425	27,484
Costs and expenses:
Cost of sales and operating expenses												27,601	13,742	26,809
Selling, general and administrative expenses												3,086	140	157
Depreciation and amortization												5,854	22	22
Acquisition costs												9,197
Total costs and expenses												45,738	13,904	26,988
Operating income												(5,266)	521	496
Interest expense												(4,425)	0	0
Foreign currency gains (losses)												633
Other income/(expense), net												(229)	(23)	57
Equity in net income/(loss) of unconsolidated subsidiary												7,660	(2,662)	(1,572)
Earnings in investments in subsidiaries												0	0	0
Income from operations before income taxes												(1,627)	(2,164)	(1,019)
Income taxes (benefit)												512	(796)	(385)
Net income												(2,139)	(1,368)	(634)
Eliminations [Member]
Net sales												(228,328)	(188,157)	(191,083)
Costs and expenses:
Cost of sales and operating expenses												(228,328)	(188,157)	(191,083)
Selling, general and administrative expenses												0	0	0
Depreciation and amortization												0	0	0
Acquisition costs												0
Total costs and expenses												(228,328)	(188,157)	(191,083)
Operating income												0	0	0
Interest expense												0	0	0
Foreign currency gains (losses)												0
Other income/(expense), net												0	0	0
Equity in net income/(loss) of unconsolidated subsidiary												0	0	0
Earnings in investments in subsidiaries												(105,178)	(119,953)	(145,950)
Income from operations before income taxes												(105,178)	(119,953)	(145,950)
Income taxes (benefit)												0	0	0
Net income												$ (105,178)	$ (119,953)	$ (145,950)

[1] Included in net income are $0.8 million in transaction costs in the second quarter of fiscal 2013, $8.3 million in transaction costs in the third quarter of fiscal 2013 and $14.2 million in the fourth quarter relating to the Terra Transaction, Rothsay Acquisition and the VION Acquisition.