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Consolidated Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Cash flows from operating activities:    
Net income $ 4,277 $ 2,998
Adjustments for noncash items:    
Depreciation 9,478 11,809
Amortization of intangibles 1,775 1,412
Deferred income taxes (1,048) (1,150)
Accrued pension and postretirement benefits 3,403 2,022
Gain on investment accounted for under the fair value method (1,100) (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 (16,679) (5,676)
Inventories (4,486) (1,436)
Income taxes recoverable/payable 5,861 2,883
Prepaid expenses and other 1,173 (44)
Accounts payable and accrued expenses 6,140 5,645
Other, net (39) (1,933)
Net cash provided by operating activities 8,755 14,061
Cash flows from investing activities:    
Capital expenditures (10,344) (5,500)
Acquisition, net of cash acquired   (3,311)
Proceeds from the sale of Falling Springs, LLC (net of transaction costs) 306  
Proceeds from the sale of assets and other 168  
Net cash used in investing activities (9,870) (8,811)
Cash flows from financing activities:    
Dividends paid (2,263) (1,445)
Debt principal payments (16,250) (3,000)
Borrowings 6,250  
Proceeds from exercise of stock options and other 2,101 125
Net cash used in financing activities (10,162) (4,320)
Effect of exchange rate changes on cash 140 947
Increase (decrease) in cash and cash equivalents (11,137) 1,877
Cash and cash equivalents at beginning of period 48,822 68,939
Cash and cash equivalents at end of period $ 37,685 $ 70,816