Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities
Net income (loss)	$ (144,590)	$ 110,224	$ (506,196)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	98,845	109,471	129,466
Stock-based compensation	18,850	19,512	16,411
Amortization of prepaid debt fees	1,657	1,597	5,715
Amortization of convertible debt discount	0	0	5,336
Deferred taxes, net	(26,757)	(6,775)	(12,985)
Goodwill impairment	(173,249)	0	(584,847)
Restructuring expense (recovery), non-cash	1,259	(4,839)	25,144
Other adjustments, net	551	(189)	(44)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	13,652	36,300	(22,770)
Inventories	(10,861)	28,253	6,389
Other current assets	(4,143)	(20,052)	(3,859)
Other long-term assets	1,093	10,578	(17,401)
Accounts payables, other current liabilities, and taxes payable	(7,702)	(47,367)	22,715
Wages and benefits payable	(1,995)	(8,967)	(19,813)
Unearned revenue	(3,274)	12,009	19,070
Warranty	(7,552)	(25,919)	29,616
Other operating, net	3,139	(8,746)	(9,283)
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	105,421	205,090	252,358
Investing activities
Acquisitions of property, plant, and equipment	(60,020)	(50,543)	(60,076)
Payments to Acquire Businesses, Net of Cash Acquired	860	79,017	20,092
Other investing, net	4,109	4,115	1,427
Net cash used in investing activities	(56,771)	(125,445)	(78,741)
Financing activities
Proceeds from borrowings	35,000	80,000	670,000
Payments on debt	(73,750)	(115,002)	(848,054)
Issuance of common stock	5,299	4,781	4,625
Repurchase of common stock	(26,977)	(47,441)	(29,428)
Other financing, net	2,990	134	(6,596)
Net cash used in financing activities	(57,438)	(77,528)	(209,453)
Effect of foreign exchange rate changes on cash and cash equivalents	(2,818)	1,208	(555)
Increase (decrease) in cash and cash equivalents	(11,606)	3,325	(36,391)
Cash and cash equivalents at beginning of period	136,411	133,086	169,477
Cash and cash equivalents at end of period	124,805	136,411	133,086
Non-cash transactions:
Noncash or Part Noncash Acquisition, Fixed Assets Acquired	828	8,843	6,739
Supplemental disclosure of cash flow information:
Income taxes, net	18,659	40,799	28,128
Interest, net of amounts capitalized	$ 9,026	$ 8,536	$ 28,047