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Consolidated Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Cash flows from operating activities:    
Net income $ 2,998 $ 6,668
Adjustments for noncash items:    
Depreciation 11,809 10,463
Amortization of intangibles 1,412 129
Deferred income taxes (1,150) (1,009)
Accrued pension and postretirement benefits 2,022 598
Gain on an investment accounted for under the fair value method (3,600)  
Loss on asset impairments and divestitures 1,131  
Changes in assets and liabilities, net of effects of acquisitions and divestitures:    
Accounts and other receivables (5,676) (16,426)
Inventories (1,436) 2,173
Income taxes recoverable/payable 2,883 2,129
Prepaid expenses and other (44) 682
Accounts payable and accrued expenses 5,645 (1,113)
Other, net (1,933) (1,584)
Net cash provided by operating activities 14,061 2,710
Cash flows from investing activities:    
Capital expenditures (5,500) (4,679)
Acquisition, net of cash acquired (3,311)  
Proceeds from the sale of assets and property disposals   611
Net cash used in investing activities (8,811) (4,068)
Cash flows from financing activities:    
Dividends paid (1,445) (1,438)
Debt principal payments (3,000) (87)
Proceeds from exercise of stock options 125 619
Net cash used in financing activities (4,320) (906)
Effect of exchange rate changes on cash 947 1,102
Increase (decrease) in cash andcash equivalents 1,877 (1,162)
Cash and cash equivalents at beginning of period 68,939 73,191
Cash andcash equivalents at end of period $ 70,816 $ 72,029