CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 17,438	$ 16,285
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	9,783	9,844
(Gain) loss from equity method investment	477	589
Amortization of marketable security premiums	1,468	765
Changes in operating assets and liabilities:
Accounts receivable	17,207	15,954
Other receivables	(594)	(738)
Inventories	(37,188)	(24,114)
Prepaid expenses and other assets	27,442	5,406
Accounts payable and accrued liabilities	3,317	3,467
Income taxes payable and deferred	(5,159)	(1,548)
Postretirement health care and life insurance benefits	1,362	1,517
Deferred compensation and other liabilities	1,620	1,235
Other	(80)	212
Net cash from operating activities	37,093	28,874
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(5,960)	(5,373)
Net purchases of trading securities	(2,269)	(2,167)
Purchase of available for sale securities	(63,992)	(20,071)
Sale and maturity of available for sale securities	18,530	3,094
Net cash used in investing activities	(53,691)	(24,517)
CASH FLOWS FROM FINANCING ACTIVITIES:
Shares purchased and retired	(10,568)	(7,076)
Dividends paid in cash	(4,750)	(9,276)
Net cash used in financing activities	(15,318)	(16,352)
Increase (decrease) in cash and cash equivalents	(31,916)	(11,995)
Cash and cash equivalents at beginning of year	63,862	78,612
Cash and cash equivalents at end of quarter	31,946	66,617
Supplemental cash flow information:
Income taxes paid, net	12,996	8,550
Interest paid	17	20
Stock dividend issued	$ 48,925	$ 38,237