Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating activities
Net income (loss)	$ 27,279	$ 8,934
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	75,233	73,749
Stock-based compensation	12,703	14,276
Amortization of prepaid debt fees	1,212	1,244
Deferred taxes, net	(9,787)	(17,490)
Goodwill impairment	977	0
Restructuring expense, non-cash	0	27
Other adjustments, net	120	(462)
Changes in operating assets and liabilities, net of acquisition:
Accounts receivable	(1,576)	21,925
Inventories	(23,986)	(27,833)
Other current assets	(5,298)	(9,447)
Other long-term assets	(1,396)	4,719
Accounts payable, other current liabilities, and taxes payable	19,669	11,652
Wages and benefits payable	6,717	(7,844)
Unearned revenue	11,800	3,418
Warranty	(3,544)	(6,937)
Other operating, net	6,415	(4,054)
Net cash provided by operating activities	116,538	65,877
Investing activities
Acquisitions of property, plant, and equipment	(32,060)	(44,548)
Business acquisitions, net of cash and cash equivalents acquired	0	(860)
Other investing, net	(193)	3,705
Net cash used in investing activities	(32,253)	(41,703)
Financing activities
Proceeds from borrowings	0	35,000
Payments on debt	(68,750)	(53,125)
Issuance of common stock	2,324	3,842
Repurchase of common stock	(15,324)	(23,566)
Other financing, net	2,395	1,765
Net cash used in financing activities	(79,355)	(36,084)
Effect of foreign exchange rate changes on cash and cash equivalents	(7,260)	(2,454)
Decrease in cash and cash equivalents	(2,330)	(14,364)
Cash and cash equivalents at beginning of period	124,805	136,411
Cash and cash equivalents at end of period	122,475	122,047
Non-cash transactions:
Property, plant, and equipment purchased but not yet paid	832	2,249
Supplemental disclosure of cash flow information:
Income taxes, net	8,528	10,817
Interest, net of amounts capitalized	$ 7,536	$ 6,276