CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 31, 2012	Mar. 31, 2012
CURRENT ASSETS
Cash & cash equivalents	$ 50,887	$ 63,862	$ 79,909
Investments	22,356	18,746	10,994
Trade accounts receivable, Less allowances of $2,187, $2,142 & $1,618	37,708	42,108	37,227
Other receivables	5,352	5,528	2,966
Inventories, at cost
Finished goods & work in process	42,205	37,046	41,617
Raw material & supplies	34,770	25,337	30,737
Prepaid expenses	3,413	4,148	5,312
Deferred income taxes	4,951	466	593
Total current assets	201,642	197,241	209,355
PROPERTY, PLANT & EQUIPMENT, at cost
Land	21,723	21,687	21,697
Buildings	108,453	108,391	107,968
Machinery & equipment	330,914	331,110	323,612
Construction in progress	4,716	2,539	5,797
Property, plant and equipment, gross	465,806	463,727	459,074
Less-accumulated depreciation	266,979	262,437	248,369
Net property, plant and equipment	198,827	201,290	210,705
OTHER ASSETS
Goodwill	73,237	73,237	73,237
Trademarks	175,024	175,024	175,024
Investments	157,600	124,685	101,866
Split dollar officer life insurance	41,394	66,911	74,209
Prepaid expenses			2,389
Equity method investment	1,794	2,127	3,937
Deferred income taxes	6,151	6,222	7,914
Total other assets	455,200	448,206	438,576
Total assets	855,669	846,737	858,636
CURRENT LIABILITIES
Accounts payable	12,328	8,942	10,398
Dividends payable	103		97
Accrued liabilities	43,322	45,150	40,890
Postretirement health care and life insurance benefits	555	555	574
Income taxes payable	4,846	6,118	2,376
Total current liabilities	61,154	60,765	54,335
NONCURRENT LIABILITIES
Deferred income taxes	42,734	38,748	43,493
Postretirement health care and life insurance benefits	27,558	26,826	26,338
Industrial development bonds	7,500	7,500	7,500
Liability for uncertain tax positions	8,013	7,866	7,548
Deferred compensation and other liabilities	58,940	55,217	51,967
Total noncurrent liabilities	144,745	136,157	136,846
SHAREHOLDERS' EQUITY
Capital in excess of par value	590,762	547,576	566,599
Retained earnings	35,598	80,210	80,128
Accumulated other comprehensive loss	(16,164)	(16,447)	(18,281)
Treasury stock (at cost)- 76, 73 & 73 shares, respectively	(1,992)	(1,992)	(1,992)
Total shareholders' equity	649,770	649,815	667,455
Total liabilities and shareholders' equity	855,669	846,737	858,636
Common stock
SHAREHOLDERS' EQUITY
Common stock	26,106	25,450	25,965
Class B common stock
SHAREHOLDERS' EQUITY
Common stock	$ 15,460	$ 15,018	$ 15,036