CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 44,923	$ 43,481
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	15,568	14,863
Loss on step acquisition	529
Loss from equity method investment		733
Amortization of marketable security premiums	2,498	2,274
Changes in operating assets and liabilities:
Accounts receivable	(60,434)	(60,765)
Other receivables	3,004	2,315
Inventories	(15,694)	(7,141)
Prepaid expenses and other assets	3,344	28,193
Accounts payable and accrued liabilities	9,153	10,301
Income taxes payable and deferred	4,982	5,124
Postretirement health care and life insurance benefits	(691)	2,575
Deferred compensation and other liabilities	2,609	2,801
Net cash from operating activities	9,791	44,754
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash acquired in step acquisition	161
Restricted cash	169
Capital expenditures	(7,315)	(10,593)
Net sales (purchases) of trading securities	(3,062)	(2,612)
Purchase of available for sale securities	(37,416)	(63,992)
Sale and maturity of available for sale securities	26,375	22,436
Net cash used in investing activities	(21,088)	(54,761)
CASH FLOWS FROM FINANCING ACTIVITIES:
Shares purchased and retired	(16,792)	(11,429)
Dividends paid in cash	(14,415)	(9,517)
Repayment of bank loans	(130)
Net cash used in financing activities	(31,337)	(20,946)
Effect of exchange rate changes on cash	(507)	(175)
Decrease in cash and cash equivalents	(43,141)	(31,128)
Cash and cash equivalents at beginning of year	88,283	63,862
Cash and cash equivalents at end of quarter	45,142	32,734
Supplemental cash flow information:
Income taxes paid, net	14,835	13,173
Interest paid	33	19
Stock dividend issued	$ 52,165	$ 48,925