CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating Activities:
Net income (loss)	$ 63,622	$ 35,919
Loss (earnings) from discontinued operations	108	4,236
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	20,655	20,001
Stock-based compensation expense	3,775	5,717
Loss from long-term investments	3,245
Deferred income taxes	(54,330)	950
Equity in undistributed income of unconsolidated joint ventures, net	(3,735)	(4,041)
Dividends received from unconsolidated joint ventures	2,929	2,762
Pension and postretirement benefits	11,149	4,511
Gain from the sale of property, plant and equipment	(579)	(1,899)
Impairment of assets	539
Amortization of inventory fair value		1,805
Changes in operating assets and liabilities excluding effects of acquisition and disposition of businesses:
Accounts receivable	(10,247)	(17,898)
Accounts receivable, joint ventures	(1,187)	(1,235)
Inventories	8,272	(23,547)
Pension contribution	(22,326)	(5,000)
Other current assets	(1,146)	(4,440)
Accounts payable and other accrued expenses	(6,572)	(13,129)
Other, net	1,350	(3,450)
Net cash provided by (used in) operating activities of continuing operations	15,522	1,262
Net cash provided by (used in) operating activites of discontinued operations		(4,006)
Net cash provided by (used in) operating activites	15,522	(2,744)
Investing Activities:
Capital expenditures	(16,465)	(12,478)
Proceeds from short-term investments	25,438	8,100
Proceeds from the sale of property, plant and equipment, net	1,979	5,900
Deferred purchase price for previous acquisition of business	(3,100)
Acquisition of business, net of cash received		(139,825)
Net cash provided by (used in) investing activities of continuing operations	7,852	(138,303)
Financing Activities:
Proceeds from long term borrowings		145,000
Repayment of debt principal and long term lease obligation	(17,242)	(16,250)
Payment of long term borrowings acquired through acquisition		(7,745)
Proceeds from sale of capital stock, net	7,926	9,692
Issuance of restricted stock shares	(755)
Proceeds from issuance of shares to employee stock purchase plan	413	756
Net cash provided by (used in) financing activities of continuing operations	(9,658)	131,453
Effect of exchange rate fluctuations on cash	(2,343)	607
Net increase (decrease) in cash and cash equivalents	11,373	(8,987)
Cash and cash equivalents at beginning of year	79,728	80,135
Cash and cash equivalents at end of quarter	91,101	71,148
Supplemental disclosure of noncash investing and financing activities
Capital lease obligation acquired through acquisition		$ 9,806