Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 86,044	$ 109,571
Accounts receivable, less allowances (2013 - $665; 2012 - $811)	93,908	89,342
Inventories - Note D	85,160	81,752
Other current assets	28,955	28,633
Total current assets	294,067	309,298
Property, plant and equipment, less accumulated depreciation (2013 - $240,474; 2012 - $240,693)	91,068	93,725
Other Assets
Goodwill - Note L	35,156	35,156
Other indefinite - lived intangible asset - Note L	640	820
Other intangible assets, net - Note L	44,457	47,538
Deferred income taxes	61,209	73,158
Other	2,076	1,484
Total other assets	143,538	158,156
Total Assets	528,673	561,179
Current Liabilities
Accounts payable	70,694	67,973
Accrued liabilities	46,786	47,056
Total current liabilities	117,480	115,029
Long-term debt - Note E	129,500	153,500
Other long-term obligations	20,066	24,892
Shareholders' Equity
Preferred stock - authorized 25,000,000 shares without par value; none issued
Common stock - authorized 75,000,000 shares without par value; 55,672,410 shares issued at June 30, 2013 and 55,263,082 shares issued at December 31, 2012	296,102	291,512
Additional contributed capital	38,952	40,008
Retained earnings	357,681	367,800
Accumulated other comprehensive loss	(118,657)	(120,604)
Total shareholder's equity before treasury	574,078	578,716
Cost of common stock held in treasury (2013 - 21,980,159 and 2012 - 21,829,954 shares)	(312,451)	(310,958)
Total shareholders' equity	261,627	267,758
Total Liabilities and Shareholders' Equity	$ 528,673	$ 561,179