Selected Quarterly data - (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended											12 Months Ended
	Dec. 31, 2013		Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012	Jun. 29, 2012		Mar. 29, 2012		Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 1,171,378		$ 1,014,570	$ 1,074,118	$ 947,143	$ 1,027,397	$ 954,440	$ 1,045,653		$ 886,366		$ 4,207,209	[1]	$ 3,913,856	[1]	$ 693,392	[1]
Gross Profit	357,381		320,294	337,822	290,725	307,570	287,987	314,862		241,706		1,306,222		1,152,125		240,099
Net income (loss)	44,193	[2]	65,475	67,200	32,275	25,066	14,499	18,632	[3]	(100,461)	[3]	209,143		(42,264)		4,555
Net Income (Loss) Available to Common Stockholders, Basic	$ 31,984	[2]	$ 50,389	$ 53,306	$ 22,553	$ 14,664	$ 4,022	$ 7,293	[3]	$ (109,332)	[3]	$ 158,232		$ (83,353)		$ 4,555
Net income (loss) per share- basic	$ 0.31	[2]	$ 0.49	$ 0.53	$ 0.21	$ 0.14	$ 0.04	$ 0.07	[3]	$ (1.33)	[3]	$ 1.56		$ (0.92)		$ 0.10
Net income (loss) per share- diluted	$ 0.31	[2]	$ 0.48	$ 0.52	$ 0.21	$ 0.13	$ 0.04	$ 0.07	[3]	$ (1.33)	[3]	$ 1.54		$ (0.92)		$ 0.10

[1] The Company attributes revenues from external customers to individual countries based upon the country in which the sale was originated.

[2] Net income and Net income per share for the three months ended December 31, 2013 includes a $13.8 million gain to remeasure the Company’s equity investment in Sicelub to fair value upon increasing the Company’s ownership to 100%, which was included in Selling, general and administrative expense. See Note 4, “Acquisitions” for additional information regarding the Company’s acquisition of Sicelub. Additionally, during the three months ended December 31, 2013, the Company incurred $26.8 million to write-off certain deferred financing fees and original issue discount associated with the Third Amendment to the Deutsche Bank Credit Agreement. See Note 10, “Debt” for additional information regarding the Third Amendment to the Deutsche Bank Credit Agreement.

[3] Net (loss) income and Net (loss) income per share for the three months ended March 30, 2012 and June 29, 2012, include $42.9 million and $0.8 million of pre-tax Charter acquisition-related expense. See Note 4, “Acquisitions” for additional information regarding the Company’s acquisition of Charter.