Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 39,754	$ 29,823
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	13,031	10,480
Benefit from deferred income taxes	(141)	(332)
Compensation expense related to equity compensation plans	1,363	1,909
Excess tax benefit from exercises of stock options	(222)	(758)
Loss on dispositions and abandonment	72	71
Changes in operating assets and liabilities:
Accounts receivable	19,413	(7,640)
Inventories	29,517	(64,317)
Prepaid expenses and other current assets	(6,288)	3,249
Accounts payable, accrued expenses and other current liabilities	(44,966)	724
Net cash provided by (used in) operating activities	45,729	(24,466)
Cash flows from investing activities:
Purchases of property, plant and equipment	(9,145)	(18,546)
Proceeds from disposals of property, plant and equipment	25	23
Net cash used in investing activities	(9,120)	(18,523)
Cash flows from financing activities:
Borrowings on credit facility and short term debt	10,861	163,528
Repayments of borrowings on credit facility and short term debt	(10,861)	(146,577)
Proceeds from Long-term Capital Lease Obligations	624
Repayments from capital lease obligations	(2,189)	(816)
Proceeds from issuance of common stock	205	851
Excess tax benefit from exercises of stock options	222	758
Net cash provided by financing activities	(1,138)	17,744
Effects of exchange rates on cash	(1,129)	(2,615)
Net increase (decrease) in cash	34,342	(27,860)
Cash - beginning of period	92,077	58,309
Cash - end of period	126,419	30,449
Supplemental disclosures of non-cash investing and financing activities:
Acquisitions of equipment through capital leases	$ 628	$ 589