Stockholders' Equity and Accumulated Other Comprehensive Loss (Details) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended		12 Months Ended
	Oct. 19, 2012	Dec. 31, 2012	Mar. 30, 2013	Mar. 31, 2012	Dec. 31, 2012
Components of and changes in accumulated other comprehensive loss, net of tax
Balance at beginning of the period			$ (171,544,000)
Other comprehensive income (loss) before reclassifications			(5,483,000)
Amounts reclassified from accumulated other comprehensive loss			982,000
Other comprehensive income (loss), net of tax			(4,501,000)	2,930,000
Balance at end of the period		(171,544,000)	(176,045,000)		(171,544,000)
Net assets of Sugar segment denominated in Argentine pesos			197,474,000
Net assets of Sugar segment denominated in U.S. dollars			4,234,000
Income tax rate for foreign currency translation gains and losses (as a percent)			35.00%
Effective income tax rate for components of accumulated other comprehensive loss (as a percent)			39.00%
Unrecognized pension cost related to employees at certain subsidiaries			20,737,000
Tax benefit recorded on unrecognized pension cost			0
Stock repurchase programs, authorized amount	100,000,000
Remaining authorized repurchase amount under November 2009 share repurchase program			32,838,000
Common shares repurchased			147
Repurchase of common stock			367,000
Common stock dividend declared and paid (in dollars per share)		$ 12.00
Common stock dividend historical amount on a quarterly basis (in dollars per share)					$ 0.75
Common stock dividend historical amount on annual (in dollars per share)					$ 3.00
Prepayment of dividend for 2013		$ 3.00			$ 3.00
Prepayment of dividend for 2014		$ 3.00			$ 3.00
Prepayment of dividend for 2015		$ 3.00			$ 3.00
Prepayment of dividend for 2016		$ 3.00			$ 3.00
Cumulative Foreign Currency Translation Adjustment
Components of and changes in accumulated other comprehensive loss, net of tax
Balance at beginning of the period			(109,457,000)
Other comprehensive income (loss) before reclassifications			(6,122,000)
Other comprehensive income (loss), net of tax			(6,122,000)
Balance at end of the period			(115,579,000)
Unrealized Gain (Loss) on Investments
Components of and changes in accumulated other comprehensive loss, net of tax
Balance at beginning of the period			2,232,000
Other comprehensive income (loss) before reclassifications			639,000
Amounts reclassified from accumulated other comprehensive loss			(210,000)
Other comprehensive income (loss), net of tax			429,000
Balance at end of the period			2,661,000
Unrealized Loss on Cash Flow Hedges
Components of and changes in accumulated other comprehensive loss, net of tax
Balance at end of the period		(113,000)	(113,000)		(113,000)
Unrecognized Pension Cost
Components of and changes in accumulated other comprehensive loss, net of tax
Balance at beginning of the period			(64,206,000)
Amounts reclassified from accumulated other comprehensive loss			1,192,000
Other comprehensive income (loss), net of tax			1,192,000
Balance at end of the period			$ (63,014,000)