CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 53,507	$ 80,264	$ 9,848
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	56,927	47,365	42,507
Amortization of intangibles	4,511	4,431	4,665
Amortization of convertible senior notes issuance costs	412	549	648
Amortization of discount on convertible senior notes	6,032	7,656	8,302
Share-based compensation	13,703	13,051	10,936
Excess tax benefit from share-based compensation	(15,024)	(3,073)	0
Loss (gain) on disposal of property, plant and equipment	31	(1,665)	67
Gain from extinguishment of debt	0	0	(1,164)
Deferred income taxes	(21,916)	(4,040)	(9,230)
Other	742	(464)	0
Changes in operating assets:
Accounts receivable	(4,406)	(23,604)	(26,758)
Inventories	(20,187)	(30,388)	12,340
Prepaid expenses and other current assets	(7,483)	(2,290)	3,298
Changes in operating liabilities:
Accounts payable	(3,584)	7,032	14,414
Accrued liabilities	(8,513)	8,022	(4,955)
Other liabilities	3,069	2,445	(210)
Income taxes payable	3,829	12,714	819
Net cash provided by operating activities	61,650	118,005	65,527
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of equity securities	(14,117)	0	0
Proceeds from sale of debt securities	0	296,600	24,025
Purchases of property, plant and equipment	(80,941)	(88,809)	(22,477)
Proceeds from sales of property, plant and equipment	40	2,163	342
Other	(3,294)	(385)	(30)
Net cash provided by (used in) investing activities	(98,312)	209,569	1,860
CASH FLOWS FROM FINANCING ACTIVITIES
Advance on lines of credit and short term debt	8,000	3,762	126,563
Repayments on lines of credit and short-term debt	0	(303,192)	(45,084)
Net proceeds from the issuance of common stock	3,526	4,818	1,702
Excess tax benefit from share-based compensation	15,024	3,073	0
Dividend to noncontrolling interest	0	(2,373)	(1,498)
Repayments of long-term debt	(134,706)	(1,165)	(13,387)
Repayments of capital lease obligations	(285)	(268)	(381)
Other	728	(4)	0
Net cash provided by (used by) financing activities	(107,713)	(295,349)	67,915
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	2,984	(3,277)	3,155
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(141,391)	28,948	138,457
CASH AND CASH EQUIVALENTS, beginning of year	270,901	241,953	103,496
CASH AND CASH EQUIVALENTS, end of year	129,510	270,901	241,953
Cash paid during the year for:
Interest	3,322	4,638	10,518
Income taxes	12,118	9,617	4,866
Non-cash activities:
Property, plant and equipment purchased on accounts payable	(1,934)	2,229	(3,291)
Fair value of common stock issued for repayment of long-term debt	$ 0	$ 0	$ (31,437)