CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities:
Net income (loss)	$ 26,234	$ 63,622
Loss (income) from discontinued operations	(102)	333
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Depreciation and amortization	19,617	20,655
Stock-based compensation expense	3,704	3,775
Loss from long-term investments		3,245
Deferred income taxes	2,267	(54,330)
Equity in undistributed income of unconsolidated joint ventures	(3,045)	(3,735)
Dividends received from unconsolidated joint ventures	1,988	2,929
Pension and postretirement benefits	5,346	11,149
Gain from the sale of property, plant and equipment	(104)	(579)
Impairment of assets		539
Changes in operating assets and liabilities excluding effects of acquisition and disposition of businesses:
Accounts receivable, accounts receivable other and taxes receivable	(14,121)	(10,245)
Accounts receivable, joint ventures	(305)	(1,187)
Inventories	7,875	8,196
Pension contribution	(13,000)	(22,326)
Other current assets	34	(1,146)
Accounts payable and other accrued expenses	6,089	(6,411)
Other, net	1,779	1,350
Net cash provided by (used in) operating activities of continuing operations	44,256	15,834
Net cash provided by (used in) operating activities of discontinued operations	848	(312)
Net cash provided by (used in) operating activities	45,104	15,522
Investing Activities:
Capital expenditures	(13,549)	(16,465)
Proceeds from the sale of property, plant and equipment, net		25,438
Proceeds from the sale of property, plant and equipment, net	104	1,979
Deferred purchase price for previous acquisition of business		(3,100)
Net cash provided by (used in) investing activities of continuing operations	(13,445)	7,852
Financing Activities:
Repayment of debt principal and long term lease obligation	(17,371)	(17,242)
Proceeds from sale of capital stock, net	26,047	7,926
Issuance of restricted stock shares	(1,189)	(755)
Proceeds from issuance of shares to employee stock purchase plan	733	413
Net cash provided by (used in) financing activities of continuing operations	8,220	(9,658)
Effect of exchange rate fluctuations on cash	3,866	(2,343)
Net increase (decrease) in cash and cash equivalents	43,745	11,373
Cash and cash equivalents at beginning of year	114,863	79,728
Cash and cash equivalents at end of quarter	$ 158,608	$ 91,101