Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 44,008	$ 52,617
Accounts and other receivables, net of allowance for doubtful accounts and sales returns of $2,870 in 2014 and $3,327 in 2013	113,429	99,246
Income Taxes Receivable, Current	2,354	0
Inventories	70,155	70,663
Deferred income taxes	5,631	5,628
Prepaid expenses and other	5,580	6,353
Total current assets	241,157	234,507
Property, plant and equipment, at cost	826,552	798,839
Less accumulated depreciation	532,062	516,279
Net property, plant and equipment	294,490	282,560
Goodwill and other intangibles, net	226,674	226,300
Other assets and deferred charges	44,164	49,641
Total assets	806,485	793,008
Current liabilities:
Accounts payable	83,920	82,795
Accrued expenses	37,252	42,158
Income taxes payable	0	114
Total current liabilities	121,172	125,067
Long-term debt	136,750	139,000
Deferred income taxes	69,127	70,795
Other noncurrent liabilities	55,533	55,482
Total liabilities	382,582	390,344
Commitments and contingencies (Notes 1, 3 and 14)
Shareholders’ equity:
Common stock, no par value (issued and outstanding - 32,387,008 at June 30, 2014 and 32,305,145 at December 31, 2013)	22,155	20,641
Common stock held in trust for savings restoration plan	(1,428)	(1,418)
Foreign currency translation adjustment	(9,965)	(19,205)
Gain (loss) on derivative financial instruments	1,038	765
Pension and other post-retirement benefit adjustments	(68,368)	(71,848)
Retained earnings	480,471	473,729
Total shareholders’ equity	423,903	402,664
Total liabilities and shareholders’ equity	$ 806,485	$ 793,008