Stockholders' Equity and Accumulated Other Comprehensive Loss (Details) - USD ($)		1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 19, 2014	Dec. 31, 2012	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014	Dec. 31, 2012	Dec. 31, 2014
Stockholders' Equity and Accumulated Other Comprehensive Loss
Remaining authorized repurchase amount under November 2009 share repurchase program			$ 50,846,000		$ 50,846,000
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 basis (in dollars per share)							$ 3.00
Portion of dividend serving as prepayment for next succeeding year (in dollars per share)		3.00
Portion of dividend serving as prepayment for second succeeding year (in dollars per share)		3.00
Portion of dividend serving as prepayment for third succeeding year (in dollars per share)		3.00
Portion of dividend serving as prepayment for fourth succeeding year (in dollars per share)		$ 3.00
Changes in the components of other comprehensive loss (OCL), net of related taxes
Foreign currency translation adjustment			(8,836,000)	$ (2,790,000)	(14,794,000)	$ (29,565,000)
Investments:
Unrealized gain			11,000	553,000	747,000	568,000
Amount reclassified from OCL to net earnings			(14,000)	(55,000)	(73,000)	456,000
Unrealized gain (loss) on investments			(3,000)	498,000	674,000	1,024,000
Unrealized gain (loss) on cash flow hedges				(275,000)		86,000
Pension Cost:
Unrealized gain (loss)			(16,000)		283,000
Amount reclassified from OCL to net earnings			961,000	320,000	1,944,000	640,000
Unrecognized pension cost			945,000	320,000	2,227,000	640,000
Other comprehensive loss, net of tax			(7,894,000)	(2,247,000)	(11,893,000)	$ (27,815,000)
Components of accumulated other comprehensive loss, net of related taxes
Accumulated other comprehensive loss			(264,530,000)		$ (264,530,000)			$ (252,637,000)
Income tax rate for foreign currency translation gains and losses (as a percent)					35.00%	35.00%
Cumulative foreign currency translation adjustment, net of related taxes			66,988,000	50,353,000	$ 66,988,000	$ 50,353,000
Tax benefit recorded on foreign currency translation adjustments					0	0
Tax benefit recorded on unrecognized pension cost					$ 0	$ 0
Effective income tax rate for components of accumulated other comprehensive loss (as a percent)					39.00%	39.00%
Unrecognized pension cost related to employees at certain subsidiaries			19,471,000	$ 8,498,000	$ 19,471,000	$ 8,498,000
Argentine pesos | Sugar
Components of accumulated other comprehensive loss, net of related taxes
Net assets of Sugar segment			115,447,000		115,447,000
U.S. dollars | Sugar
Components of accumulated other comprehensive loss, net of related taxes
Net liabilities			22,000		22,000
Common Stock
Stockholders' Equity and Accumulated Other Comprehensive Loss
Repurchase of common stock (in shares)	16,738
Share price	$ 2,950.000
Repurchase of common stock	$ 49,377,000
Cumulative foreign currency translation adjustment
Components of accumulated other comprehensive loss, net of related taxes
Accumulated other comprehensive loss			(208,831,000)		(208,831,000)			(194,037,000)
Unrealized gain on investments
Components of accumulated other comprehensive loss, net of related taxes
Accumulated other comprehensive loss			2,008,000		2,008,000			1,334,000
Unrecognized pension cost
Components of accumulated other comprehensive loss, net of related taxes
Accumulated other comprehensive loss			$ (57,707,000)		$ (57,707,000)			$ (59,934,000)