CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Apr. 02, 2011
CURRENT ASSETS
Cash & cash equivalents	$ 79,909	$ 78,612	$ 84,908
Investments	10,994	10,895	9,555
Trade accounts receivable, Less allowances of $1,618, $1,731 & $1,824	37,227	41,895	35,758
Other receivables	2,966	3,391	6,581
Inventories, at cost
Finished goods & work in process	41,617	42,676	46,041
Raw material & supplies	30,737	29,084	25,156
Prepaid expenses	5,312	5,070	5,585
Deferred income taxes	593	578	711
Total current assets	209,355	212,201	214,295
PROPERTY, PLANT & EQUIPMENT, at cost
Land	21,697	21,939	21,647
Buildings	107,968	107,567	102,981
Machinery & equipment	323,612	322,993	307,291
Construction in progress	5,797	2,598	12,607
Property, plant and equipment, gross	459,074	455,097	444,526
Less-accumulated depreciation	248,369	242,935	230,125
Net property, plant and equipment	210,705	212,162	214,401
OTHER ASSETS
Goodwill	73,237	73,237	73,237
Trademarks	175,024	175,024	175,024
Investments	101,866	96,161	84,239
Split dollar officer life insurance	74,209	74,209	74,441
Prepaid expenses	2,389	3,212	5,902
Equity method investment	3,937	3,935	4,530
Deferred income taxes	7,914	7,715	9,498
Total other assets	438,576	433,493	426,871
Total assets	858,636	857,856	855,567
CURRENT LIABILITIES
Accounts payable	10,398	10,683	13,426
Dividends payable	97	4,603	122
Accrued liabilities	40,890	43,069	41,059
Income taxes payable	2,376		1,428
Total current liabilities	53,761	58,355	56,035
NONCURRENT LIABILITIES
Deferred income taxes	43,493	43,521	46,293
Postretirement health care and life insurance benefits	26,912	26,108	21,219
Industrial development bonds	7,500	7,500	7,500
Liability for uncertain tax positions	7,548	8,345	9,966
Deferred compensation and other liabilities	51,967	48,092	48,131
Total noncurrent liabilities	137,420	133,566	133,109
SHAREHOLDERS' EQUITY
Capital in excess of par value	566,599	533,677	549,264
Retained earnings	80,128	114,269	92,509
Accumulated other comprehensive loss	(18,281)	(19,953)	(13,732)
Treasury stock (at cost)- 73, 71 & 71 shares, respectively	(1,992)	(1,992)	(1,992)
Total shareholders' equity	667,455	665,935	666,423
Total liabilities and shareholders' equity	858,636	857,856	855,567
Common stock
SHAREHOLDERS' EQUITY
Common stock	25,965	25,333	25,755
Class B common stock
SHAREHOLDERS' EQUITY
Common stock	$ 15,036	$ 14,601	$ 14,619