Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating activities
Net income	$ 3,496	$ 25,572
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	24,757	27,227
Stock-based compensation	5,096	4,198
Amortization of prepaid debt fees	414	348
Deferred taxes, net	(9,227)	(69)
Restructuring expense, non-cash	26	0
Other adjustments, net	196	863
Changes in operating assets and liabilities, net of acquisition:
Accounts receivable	8,362	20,825
Inventories	(15,944)	(10,994)
Other current assets	(6,867)	(7,261)
Other long-term assets	3,549	1,308
Accounts payable, other current liabilities, and taxes payable	(14,629)	2,953
Wages and benefits payable	(6,546)	(13,358)
Unearned revenue	13,474	9,740
Warranty	(2,098)	(3,357)
Other operating, net	(3,464)	(3,992)
Net cash provided by operating activities	595	54,003
Investing activities
Acquisitions of property, plant, and equipment	(14,765)	(12,043)
Business acquisitions, net of cash and cash equivalents acquired	(860)	(860)
Other investing, net	56	283
Net cash used in investing activities	(15,569)	(12,620)
Financing activities
Payments on debt	(18,750)	(13,750)
Issuance of common stock	1,073	978
Repurchase of common stock	(200)	(10,594)
Other financing, net	634	140
Net cash used in financing activities	(17,243)	(23,226)
Effect of foreign exchange rate changes on cash and cash equivalents	(2,633)	3,195
Increase (Decrease) in cash and cash equivalents	(34,850)	21,352
Cash and cash equivalents at beginning of period	136,411	133,086
Cash and cash equivalents at end of period	101,561	154,438
Non-cash transactions:
Property, plant, and equipment purchased but not yet paid	6,890	9,256
Supplemental disclosure of cash flow information:
Income taxes, net	2,671	10,270
Interest, net of amounts capitalized	$ 1,867	$ 2,088