Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Assets
Cash and cash equivalents	$ 93,784	$ 73,191
Accounts and other receivables, net of allowance for doubtful accounts and sales returns of $2,336 in 2011 and $5,286 in 2010	100,822	84,076
Income taxes recoverable	6,319	6,643
Inventories	35,747	43,058
Deferred income taxes	6,500	6,924
Prepaid expenses and other	4,205	5,369
Total current assets	247,377	219,261
Property, plant and equipment, at cost	692,303	669,290
Less accumulated depreciation	494,466	462,453
Net property, plant and equipment	197,837	206,837
Other assets and deferred charges	49,079	48,127
Goodwill and other intangibles, net	106,561	106,117
Total assets	600,854	580,342
Liabilities and Shareholders' Equity
Accounts payable	64,726	58,209
Accrued expenses	27,089	33,229
Current portion of long-term debt	122	222
Total current liabilities	91,937	91,660
Long-term debt	248	228
Deferred income taxes	55,545	51,879
Other noncurrent liabilities	16,916	19,029
Total liabilities	164,646	162,796
Commitments and contingencies (Notes 1 and 2)
Shareholders' equity:
Common stock, no par value (issued and outstanding - 32,013,568 at June 30, 2011 and 31,883,173 at December 31, 2010)	12,781	10,724
Common stock held in trust for savings restoration plan	(1,337)	(1,332)
Foreign currency translation adjustment	28,880	23,572
Gain (loss) on derivative financial instruments	64	280
Pension and other postretirement benefit adjustments	(57,851)	(59,871)
Retained earnings	453,671	444,173
Total shareholders' equity	436,208	417,546
Total liabilities and shareholders' equity	$ 600,854	$ 580,342