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Business Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Income from Operations (loss) by business segment |  |
Income from operations | $ 16,683 | $ 12,368
Engineered Equipment Technology and Parts Group [Member] |  |
Income from Operations (loss) by business segment |  |
Income from operations | 15,562 | 12,381
Contracting / Services Group (a) [Member] |  |
Income from Operations (loss) by business segment |  |
Income from operations | 3,461 | 3,145
Component Parts Group [Member] |  |
Income from Operations (loss) by business segment |  |
Income from operations | 4,198 | 3,372
Corporate and other [Member] |  |
Income from Operations (loss) by business segment |  |
Income from operations | (6,474) | (6,418)
Eliminations [Member] |  |
Income from Operations (loss) by business segment |  |
Income from operations | $ (64) | $ (112)

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- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
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- Details
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Namespace Prefix: | us-gaap_
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