Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating activities
Net income	$ 61,556	$ 50,561
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	64,299	65,071
Stock-based compensation	9,518	9,121
Amortization of prepaid debt fees	2,265	2,762
Amortization of convertible debt discount	5,336	4,957
Deferred taxes, net	6,081	(8,132)
Other adjustments, net	285	3,306
Changes in operating assets and liabilities, net of acquisition:
Accounts receivable	(12,106)	(52,124)
Inventories	(36,668)	(40,930)
Other current assets	(21,268)	8,375
Other long-term assets	(22,993)	(763)
Accounts payables, other current liabilities, and taxes payable	16,523	42,463
Wages and benefits payable	(21,531)	19,648
Unearned revenue	24,159	2,365
Warranty	9,510	14,355
Other operating, net	2,726	(3,949)
Net cash provided by operating activities	87,692	117,086
Investing activities
Acquisitions of property, plant, and equipment	(28,712)	(27,716)
Business acquisition, net of cash equivalents acquired	(14,635)	0
Other investing, net	513	4,495
Net cash used in investing activities	(42,834)	(23,221)
Financing activities
Payments on debt	(55,630)	(73,881)
Issuance of common stock	2,553	6,812
Other financing, net	(319)	(2,237)
Net cash used in financing activities	(53,396)	(69,306)
Effect of foreign exchange rate changes on cash and cash equivalents	7,345	(9,081)
Increase (decrease) in cash and cash equivalents	(1,193)	15,478
Cash and cash equivalents at beginning of period	169,477	121,893
Cash and cash equivalents at end of period	168,284	137,371
Non-cash transactions:
Property, plant, and equipment purchased but not yet paid, net	978	(3,491)
Fair value of contingent and deferred consideration payable for business acquisition	5,108	0
Supplemental disclosure of cash flow information:
Income taxes paid, net	6,842	9,355
Interest, net of amounts capitalized	$ 15,927	$ 21,178