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Balance Sheet Components (Balance Sheet Components) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Balance Sheet Components [Abstract] |  |
Customers | $ 254,816 | $ 212,899
Other | 3,889 | 5,976
Total | 258,705 | 218,875
Less allowance for doubtful accounts | 5,860 | 5,322
Total receivables - net | 252,845 | 213,553
Raw materials and components parts | 155,577 | 126,901
Work in process | 40,506 | 23,164
Finished goods | 58,175 | 46,481
Total | 254,258 | 196,546
Land and improvements | 30,320 | 23,956
Buildings and improvements | 128,932 | 127,272
Machinery, equipment and other | 278,936 | 254,649
Office and transportation equipment | 98,341 | 95,141
Construction in progress | 8,820 | 7,003
Total | 545,349 | 508,021
Less accumulated depreciation and amortization | 331,632 | 319,459
Total property, plant and equipment - net | 213,717 | 188,562
Payroll and related items | 51,728 | 46,937
Management incentive compensation | 17,402 | 19,985
Income taxes payable | 8,456 | 6,126
Deferred income taxes | 167 | 723
Insurance | 6,495 | 5,544
Warranty | 4,417 | 3,831
Deferred revenue | 7,954 | 7,172
Restructuring | 5,875 | 3,543
Interest rate exchange agreement |  | 2,328
Liability for uncertain tax positions | 1,061 | 1,647
Accrued interest | 1,424 |
Contingent consideration for acquisition | 1,500 |
Other | 24,217 | 20,043
Total accrued expenses | 130,696 | 117,879
Pension and retiree medical obligations | 91,542 | 74,559
Liability for uncertain tax positions | 5,262 | 5,912
Deferred revenue | 3,198 | 4,225
Other | 15,844 | 10,687
Total other noncurrent liabilities | $ 115,846 | $ 95,383

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