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	$ 58,131	$ 26,856
Adjustments to reconcile net income to net cash provided by (used in) operations:
Impairment charges		225
Depreciation and amortization	21,162	20,382
Stock-based compensation expense	3,396	2,899
Provision for deferred income taxes	16,363	13,551
Provision for doubtful accounts	1,165	602
Loss (gain) on sale of assets	22	(183)
Change in assets and liabilities:
Increase in receivables	(57,603)	(54,568)
Increase in inventories	(27,921)	(3,100)
Increase in other assets	(5,226)	(1,458)
Increase in accounts payable	28,893	6,638
(Decrease) increase in accrued liabilities and other	(3,655)	14,264
Net cash provided by operating activities	34,727	26,108
Cash flows from investing activities:
Capital expenditures	(28,136)	(7,412)
Business acquisition, net of cash acquired	(26,775)
Proceeds from sale of property, plant and equipment	434	1,161
Net cash used in investing activities	(54,477)	(6,251)
Cash flows from financing activities:
Borrowings on lines of credit	5,891	133,121
Payments on lines of credit	(5,754)	(155,726)
Proceeds from employee stock plans	1,768	3,559
Purchase of treasury stock	(599)	(153)
Post-closing payment for business acquisition	(2,055)
Other financing activities	(147)	(342)
Net cash used in financing activities	(896)	(19,541)
Effect of exchange rate changes on cash	538	252
Net (decrease) increase in cash and cash equivalents	(20,108)	568
Cash and cash equivalents at beginning of period	83,010	11,534
Cash and cash equivalents at end of period	62,902	12,102
Cash paid for:
Income taxes (net of refunds)	20,752	5,356
Interest	$ 3,775	$ 6,424