CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating Activities:
Net income (loss)	$ 12,662	$ 4,646
Loss (earnings) from discontinued operations	(102)	185
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Depreciation and amortization	13,027	13,561
Stock-based compensation expense	2,245	2,678
Loss from long-term investments		3,245
Deferred income taxes	(515)	(1,050)
Equity in undistributed income of unconsolidated joint ventures	(1,291)	(1,962)
Dividends received from unconsolidated joint ventures	1,988	2,929
Pension and postretirement benefits	5,496	6,718
Gain from the sale of property, plant and equipment	(75)	(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	(7,697)	(3,330)
Accounts receivable, joint ventures	364	(778)
Inventories	5,941	3,027
Pension contribution	(6,500)	(16,000)
Other current assets	1,443	(3,331)
Accounts payable and other accrued expenses	1,563	(7,261)
Other, net	1,171	1,332
Net cash provided by (used in) operating activities of continuing operations	29,720	4,569
Net cash provided by (used in) operating activities of discontinued operations	848	(268)
Net cash provided by (used in) operating activities	30,568	4,301
Investing Activities:
Capital expenditures	(10,537)	(10,767)
Proceeds from the sale of property, plant and equipment, net		25,438
Proceeds from the sale of property, plant and equipment, net	75	1,979
Deferred purchase price for previous acquisition of business		(3,100)
Net cash provided by (used in) investing activities of continuing operations	(10,462)	13,550
Financing Activities:
Repayment of debt principal and long term lease obligation	(5,530)	(2,992)
Proceeds from sale of capital stock, net	8,091	3,427
Issuance of restricted stock shares	(1,005)	(571)
Proceeds from issuance of shares to employee stock purchase plan	390	413
Net cash provided by (used in) financing activities of continuing operations	1,946	277
Effect of exchange rate fluctuations on cash	100	(2,070)
Net increase (decrease) in cash and cash equivalents	22,152	16,058
Cash and cash equivalents at beginning of year	114,863	79,728
Cash and cash equivalents at end of quarter	$ 137,015	$ 95,786