Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 84,441	$ 76,412
Accounts receivable, less allowances (2012 - $1,286; 2011 - $1,100)	89,867	88,345
Inventories, net - Note D	92,069	92,540
Other current assets	26,838	26,089
Total current assets	293,215	283,386
Property, plant and equipment, less accumulated depreciation (2012 - $252,310; 2011 - $241,585)	89,680	84,860
Other Assets
Prepaid pension asset	6,061	4,359
Goodwill - Note L	7,872	500
Other intangible assets, net - Note L	34,005	29,886
Deferred income taxes	75,552	76,200
Other	2,281	1,624
Total other assets	125,771	112,569
Total Assets	508,666	480,815
Current Liabilities
Accounts payable	74,559	80,468
Accrued liabilities	41,657	43,769
Total current liabilities	116,216	124,237
Long-term debt - Note E	108,700	74,400
Other long-term obligations	18,853	18,881
Shareholders' Equity
Preferred stock - authorized 25,000,000 shares without par value; none issued
Common stock - authorized 75,000,000 shares without par value; 55,055,792 shares issued at April 1, 2012 and 54,790,110 shares issued at December 31, 2011	289,848	287,661
Additional contributed capital	38,098	39,161
Retained earnings	353,295	352,205
Accumulated other comprehensive loss	(113,026)	(115,146)
Total shareholder's equity before treasury	568,215	563,881
Cost of common stock held in treasury (2012 - 20,996,182 and 2011 - 20,724,106 shares)	(303,318)	(300,584)
Total shareholders' equity	264,897	263,297
Total Liabilities and Shareholders' Equity	$ 508,666	$ 480,815