CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating Activities
Net income	$ 37,055	$ 34,571	$ (62,870)
Loss from discontinued operations	6,751	3,750	3,733
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	26,308	15,700	17,212
Stock-based compensation expense	8,096	6,628	4,679
Deferred income taxes	(2,725)	(8,381)	43,424
Equity in undistributed income of unconsolidated joint ventures, net	(5,451)	(8,658)	(5,462)
Dividends received from unconsolidated joint ventures	7,637	10,329	2,669
Pension and postretirement benefits	5,902	5,838	6,452
Impairment charges	441		17,741
Gain on acquisition/disposal		(3,173)	(2,908)
Gain from the sale of property, plant and equipment	(2,800)
Amortization of inventory fair value	1,805
Changes in operating assets and liabilities excluding effects of acquisition and disposition of businesses:
Accounts receivable	(5,071)	(15,661)	(4,345)
Accounts receivable, joint ventures	(302)	(537)	531
Inventories	(20,643)	(10,760)	10,035
Other current assets	(1,186)	(1,566)	323
Accounts payable and other accrued expenses	(27,217)	21,335	(17,971)
Pension and postretirement contribution	(5,904)	(6,409)	(9,128)
Other, net	(929)	6,163	1,275
Net cash provided by (used in) operating activities of continuing operations	21,767	49,169	5,390
Net cash provided by (used in) operating activities of discontinued operations	(4,906)	(3,402)	(2,776)
Net cash provided by operating activities	16,861	45,767	2,614
Investing Activities
Capital expenditures	(21,316)	(12,241)	(12,087)
Acquisition of business, net of cash received	(139,825)	(25,908)	(7,400)
Proceeds from the sale of property, plant and equipment, net	7,500
Proceeds from disposition of an unconsolidated joint venture		9,272
Investment activity, other			(5,000)
Redemptions of long-term investments	7,805	5,800	6,600
Return of investment in unconsolidated joint ventures		919
Net cash used in investing activities of continuing operations	(145,836)	(22,158)	(17,887)
Net cash provided by (used in) investing activities of discontinued operations	(158)	(366)
Net cash provided by investing activities	(145,994)	(22,524)	(17,887)
Financing Activities
Proceeds from long-term borrowings	145,000
Repayment of debt principal	(22,500)
Repayment of long-term borrowings acquired through acquisition	(6,061)
Proceeds from sale of capital stock, net	11,071	790	688
Proceeds from issuance of shares to employee stock purchase plan	757	686	672
Net cash provided by financing activities	128,267	1,476	1,360
Effect of exchange rate fluctuations on cash	459	(2,322)	1,481
Net increase (decrease) in cash and cash equivalents	(407)	22,397	(12,432)
Cash and cash equivalents at beginning of year	80,135	57,738	70,170
Cash and cash equivalents at end of year	79,728	80,135	57,738
Supplemental disclosure of noncash investing and financing activities
Deferred purchase price for acquisition of business		2,910
Capital lease obligation acquired through acquisition	$ 9,206