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Consolidated Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Cash flows from operating activities:    
Net income $ 10,351 $ 12,371
Adjustments for noncash items:    
Depreciation 24,334 21,731
Amortization of intangibles 2,742 258
Deferred income taxes (245) 229
Accrued pension and postretirement benefits 4,044 1,196
Gain on investment accounted for under the fair value method (6,300)  
Loss on asset impairments and divestitures 1,942 798
Changes in assets and liabilities, net of effects of acquisitions and divestitures:    
Gain on disposal of assets   (188)
Accounts and other receivables (4,750) (14,776)
Inventories (11,052) 8,346
Income taxes recoverable/payable 575 324
Prepaid expenses and other 1,814 1,066
Accounts payable and accrued expenses 7,775 (709)
Other, net (3,716) (2,475)
Net cash provided by operating activities 27,514 28,171
Cash flows from investing activities:    
Capital expenditures (8,933) (8,504)
Acquisition, net of cash acquired (3,311)  
Proceeds from the sale of assets and property disposals 75 960
Net cash used in investing activities (12,169) (7,544)
Cash flows from financing activities:    
Dividends paid (2,890) (2,878)
Debt principal payments and financing costs (28,354) (81)
Proceeds from exercise of stock options 125 709
Net cash used in financing activities (31,119) (2,250)
Effect of exchange rate changes on cash (606) 2,216
Increase (decrease) in cash and cash equivalents (16,380) 20,593
Cash and cash equivalents at beginning of period 68,939 73,191
Cash and cash equivalents at end of period $ 52,559 $ 93,784