CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 9,069	$ 8,774
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	4,901	4,953
(Gain) loss from equity method investment	282	122
Amortization of marketable security premiums	632	370
Changes in operating assets and liabilities:
Accounts receivable	4,644	4,955
Other receivables	(399)	764
Inventories	(14,370)	(175)
Prepaid expenses and other assets	26,299	503
Accounts payable and accrued liabilities	1,467	(2,621)
Income taxes payable and deferred	(1,001)	1,724
Postretirement health care and life insurance benefits	732	804
Deferred compensation and other liabilities	633	511
Other	542	703
Net cash from operating activities	33,431	21,387
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(2,241)	(3,250)
Net purchases of trading securities	(1,945)	(1,949)
Purchase of available for sale securities	(47,335)	(2,805)
Sale and maturity of available for sale securities	14,409	1,346
Net cash used in investing activities	(37,112)	(6,658)
CASH FLOWS FROM FINANCING ACTIVITIES:
Shares purchased and retired	(4,641)	(4,247)
Dividends paid in cash	(4,653)	(9,185)
Net cash used in financing activities	(9,294)	(13,432)
Increase (decrease) in cash and cash equivalents	(12,975)	1,297
Cash and cash equivalents at beginning of year	63,862	78,612
Cash and cash equivalents at end of quarter	50,887	79,909
Supplemental cash flow information:
Income taxes paid, net	5,990	1,657
Interest paid	13	14
Stock dividend issued	$ 48,925	$ 38,237