CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 39,677	$ 46,656
Trade accounts and other receivables, net	113,424	89,531
Inventories:
Finished goods, net	76,435	47,872
Raw materials and supplies	49,798	43,183
Total inventories	126,233	91,055
Prepaid expenses and other current assets	4,735	2,970
Prepaid income taxes	4,827
Deferred income taxes	8,226	7,443
Total current assets	297,122	237,655
Property, plant and equipment:
Land and land improvements	14,205	14,074
Land-use and mineral rights	8,603	8,041
Buildings	65,787	56,442
Machinery and equipment	445,050	362,286
Construction in progress	34,322	67,551
Total	567,967	508,394
Less accumulated depreciation and amortization	192,226	169,911
Net property, plant and equipment	375,741	338,483
Goodwill	12,164	13,053
Intangible and other assets, net	9,290	10,380
Total assets	694,317	599,571
Current liabilities:
Accounts payable	24,743	22,161
Accrued income taxes		113
Dividends payable	5,546
Other accrued expenses	36,028	28,973
Total current liabilities	66,317	51,247
Deferred income taxes	31,972	26,345
Shareholders' equity:
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none outstanding
Common stock, par value $0.01 per share, 40,000,000 shares authorized; 23,107,332 and 23,108,082 shares issued and outstanding at September 30, 2011 and December 31, 2010, respectively	231	231
Additional paid-in capital	55,449	57,475
Retained earnings	544,223	468,387
Accumulated other comprehensive loss	(3,875)	(4,114)
Total shareholders' equity	596,028	521,979
Total liabilities and shareholders' equity	$ 694,317	$ 599,571